{"id":114090,"date":"2025-02-27T21:49:00","date_gmt":"2025-02-27T21:49:00","guid":{"rendered":"https:\/\/peraltafinancing.com\/business\/marketing\/what-is-javascript-seo-6-best-practices-to-boost-rankings\/"},"modified":"2025-02-27T21:49:00","modified_gmt":"2025-02-27T21:49:00","slug":"what-is-javascript-seo-6-best-practices-to-boost-rankings","status":"publish","type":"post","link":"https:\/\/fivemor.com\/?p=114090","title":{"rendered":"What Is JavaScript SEO? 6 Best Practices to Boost Rankings"},"content":{"rendered":"<p> <br \/>\n<\/p>\n<div id=\"content\">\n<p>JavaScript has enabled highly interactive and dynamic websites. But it also presents a challenge: <strong>ensuring your site is crawlable, indexable, and fast.<\/strong><\/p>\n<p>That\u2019s why JavaScript SEO is essential.<\/p>\n<p>When applied correctly, these strategies can significantly boost organic search performance.<\/p>\n<p>For instance, book retailer Follet saw a remarkable recovery after fixing JavaScript issues:<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-300x151.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-1280x643.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-768x386.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-1536x771.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-2048x1028.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-480x241.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-640x321.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-960x482.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-1440x723.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-1600x803.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-1920x964.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"JavaScript SEO Improvements\" alt=\"JavaScript SEO Improvements\" data-aspect-ratio=\"0.50142857142857\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-300x151.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-1280x643.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-768x386.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-1536x771.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-2048x1028.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-480x241.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-640x321.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-960x482.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-1440x723.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-1600x803.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/javascript-seo-improvements-1920x964.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p>That\u2019s the impact of effective JavaScript SEO.<\/p>\n<p>In this guide, you\u2019ll:<\/p>\n<ul>\n<li>Get an introduction to JavaScript SEO<\/li>\n<li>Understand the challenges with using JavaScript for search<\/li>\n<li>Learn best practices to optimize your JavaScript site for organic search<\/li>\n<\/ul>\n<h2>What Is JavaScript SEO?<\/h2>\n<p>JavaScript SEO is the process of optimizing JavaScript websites. It ensures search engines can crawl, render, and index them.<\/p>\n<p>Aligning JavaScript websites with SEO best practices can boost organic search rankings. All without hurting the user experience.<\/p>\n<p>However, there are still uncertainties surrounding JavaScript and SEO\u2019s impact.<\/p>\n<h3>Common JavaScript Misconceptions<\/h3>\n<div class=\"table-responsive\">\n<table class=\"table table-primary table-striped table-hover\">\n<thead>\n<tr>\n<th scope=\"col\">Misconception<\/th>\n<th scope=\"col\">Reality<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td scope=\"row\" data-before=\"Misconception\">Google can handle all JavaScript perfectly.<\/td>\n<td data-before=\"Reality\">Since JavaScript is rendered in two phases, delays and errors can occur. These issues can stop Google from crawling, rendering, and indexing content, hurting rankings.<\/td>\n<\/tr>\n<tr>\n<td scope=\"row\" data-before=\"Misconception\">JavaScript is only for large sites.<\/td>\n<td data-before=\"Reality\">JavaScript is versatile and benefits websites of varying sizes. Smaller sites can use JavaScript in interactive forms, content accordions, and navigation dropdowns<\/td>\n<\/tr>\n<tr>\n<td scope=\"row\" data-before=\"Misconception\">JavaScript SEO is optional.<\/td>\n<td data-before=\"Reality\">JavaScript SEO is key for finding and indexing content, especially on JavaScript-heavy sites.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Benefits of JavaScript SEO<\/h3>\n<p>Optimizing JavaScript for SEO can offer several advantages:<\/p>\n<ul>\n<li><strong>Improved visibility:<\/strong> Crawled and indexed JavaScript content can boost search rankings<\/li>\n<li><strong>Enhanced performance:<\/strong> Techniques like code splitting deliver only the important JavaScript code. This speeds up the site and reduces load times.<\/li>\n<li><strong>Stronger collaboration:<\/strong> JavaScript SEO encourages SEOs, developers, and web teams to work together. This helps improve communication and alignment on your <a title=\"Defining an SEO Project Plan\" href=\"https:\/\/www.edwindanromero.com\/seo-project-plan\/\" target=\"_blank\" rel=\"noopener\">SEO project plan<\/a>.<\/li>\n<li><strong>Enhanced user experience:<\/strong> JavaScript boosts UX with smooth transitions and interactivity. It also speeds up and makes navigation between webpages more dynamic.<\/li>\n<\/ul>\n<h2>How Search Engines Render JavaScript<\/h2>\n<p>To understand JavaScript\u2019s SEO impact, let\u2019s explore how search engines process JavaScript pages.<\/p>\n<p>Google has <a title=\"Understand JavaScript SEO Basics | Google Search Central | Documentation\" href=\"https:\/\/developers.google.com\/search\/docs\/crawling-indexing\/javascript\/javascript-seo-basics\" target=\"_blank\" rel=\"noopener\">outlined<\/a> that it processes JavaScript websites in three phases:<\/p>\n<ol>\n<li>Crawling<\/li>\n<li>Processing<\/li>\n<li>Indexing<\/li>\n<\/ol>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-300x214.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-1280x914.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-768x548.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-1536x1097.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-2048x1462.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-480x343.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-640x457.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-960x685.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-1440x1028.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-1600x1142.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-1920x1371.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Googlebot \u2013 Crawl Render Index\" alt=\"Googlebot \u2013 Crawl Render Index\" data-aspect-ratio=\"0.71428571428571\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-300x214.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-1280x914.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-768x548.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-1536x1097.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-2048x1462.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-480x343.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-640x457.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-960x685.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-1440x1028.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-1600x1142.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/googlebot-crawl-render-index-1920x1371.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<h3>Crawling<\/h3>\n<p>When Google finds a URL, it checks the <a title=\"Robots.txt and SEO: Complete Guide\" href=\"https:\/\/backlinko.com\/hub\/seo\/robots-txt\" target=\"_blank\" rel=\"noopener\">robots.txt<\/a> file and meta robots tags. This is to see if any content is blocked from being crawled or rendered.<\/p>\n<p>If a link is discoverable by Google, the URL is added to a queue for simultaneous crawling and rendering.<\/p>\n<h3>Rendering<\/h3>\n<p>For traditional HTML websites, content is immediately available from the server response.<\/p>\n<p>In JavaScript websites, Google must execute JavaScript to render and index the content. Due to resource demands, rendering is deferred until resources are available with <a title=\"The new evergreen Googlebot | Google Search Central Blog\" href=\"https:\/\/developers.google.com\/search\/blog\/2019\/05\/the-new-evergreen-googlebot\" target=\"_blank\" rel=\"noopener\">Chromium<\/a>.<\/p>\n<h3>Indexing<\/h3>\n<p>Once rendered, Googlebot reads the HTML, adds new links to the crawl list, and indexes the content.<\/p>\n<h2>How JavaScript Affects SEO<\/h2>\n<p>Despite its growing popularity, the question often arises: Is JavaScript bad for SEO?<\/p>\n<p>Let\u2019s examine aspects that can severely impact SEO if you don\u2019t optimize JavaScript for search.<\/p>\n<h3>Rendering Delays<\/h3>\n<p>For Single Page Applications (SPAs) \u2014 like Gmail or Twitter, where content updates without page refreshes \u2014 JavaScript controls the content and user experience.<\/p>\n<p>If Googlebot can\u2019t execute the JavaScript, it may show a blank page.<\/p>\n<p>This happens when Google struggles to process the JavaScript. It hurts the page\u2019s visibility and organic performance.<\/p>\n<p>To test how Google will see your SPA site if it can\u2019t execute JavaScript, use the web crawler <a title=\"Screaming Frog SEO Spider Website Crawler\" href=\"https:\/\/www.screamingfrog.co.uk\/seo-spider\/\" target=\"_blank\" rel=\"noopener\">Screaming Frog<\/a>. Configure the render settings to \u201cText Only\u201d and crawl your site.<\/p>\n<h3>Indexing Issues<\/h3>\n<p>JavaScript frameworks (like React or Angular, which help build interactive websites) can make it harder for Google to read and index content.<\/p>\n<p>For example, Follet\u2019s online bookstore migrated millions of pages to a JavaScript framework.<\/p>\n<p>Google had trouble processing the JavaScript, causing a sharp decline in organic performance:<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-300x154.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-1280x656.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-768x394.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-1536x788.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-2048x1050.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-480x246.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-640x328.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-960x492.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-1440x738.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-1600x820.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-1920x985.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Impact from Rendering Issues\" alt=\"Impact from Rendering Issues\" data-aspect-ratio=\"0.51285714285714\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-300x154.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-1280x656.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-768x394.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-1536x788.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-2048x1050.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-480x246.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-640x328.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-960x492.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-1440x738.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-1600x820.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/impact-from-rendering-issues-1920x985.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<h3>Crawl Budget Challenges<\/h3>\n<p>Websites have a <a title=\"What is Crawl Budget? And Why Does It Matter for SEO?\" href=\"https:\/\/backlinko.com\/hub\/seo\/crawl-budget\" target=\"_blank\" rel=\"noopener\">crawl budget<\/a>. This refers to the number of pages Googlebot can crawl and index within a given timeframe.<\/p>\n<p>Large JavaScript files consume significant crawling resources. They also limit Google\u2019s ability to explore deeper pages on the site.<\/p>\n<h3>Core Web Vitals Concerns<\/h3>\n<p>JavaScript can affect how quickly the main content of a web page is loaded. This affects <a title=\"Optimize Largest Contentful Paint | Articles | web.dev\" href=\"https:\/\/web.dev\/articles\/optimize-lcp#:~:text=The%20reason%20this%20happens%20is%20because%2C%20on%20this%20page%2C%20the%20LCP%20element%20is%20hidden%20until%20the%20JavaScript%20code%20finishes%20loading%2C%20and%20then%20everything%20is%20revealed%20at%20once.\" target=\"_blank\" rel=\"noopener\">Largest Contentful Paint (LCP)<\/a>, a Core Web Vitals score.<\/p>\n<p>For example, check out this performance timeline:<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-300x169.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-1280x720.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-768x432.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-1536x864.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-2048x1152.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-480x270.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-640x360.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-960x540.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-1440x810.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-1600x900.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-1920x1080.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"LCP Breakdown \u2013 Render Delay\" alt=\"LCP Breakdown \u2013 Render Delay\" data-aspect-ratio=\"0.56285714285714\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-300x169.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-1280x720.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-768x432.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-1536x864.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-2048x1152.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-480x270.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-640x360.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-960x540.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-1440x810.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-1600x900.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/lcp-breakdown-render-delay-1920x1080.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p>Section #4 (\u201cElement Render Delay\u201d) shows a JavaScript-induced delay in rendering an element.<\/p>\n<p>This negatively impacts the LCP score.<\/p>\n<h2>JavaScript Rendering Options<\/h2>\n<p>When rendering webpages, you can choose from three options:<\/p>\n<p>Server-Side Rendering (SSR), Client-Side Rendering (CSR), or Dynamic Rendering.<\/p>\n<p>Let\u2019s break down the key differences between them.<\/p>\n<h3>Server-Side Rendering (SSR)<\/h3>\n<p>SSR creates the full HTML on the server. It then sends this HTML directly to the client, like a browser or Googlebot.<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__visual-chart backlinko-image\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-300x179.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-1280x764.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-768x458.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-1536x917.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-2048x1222.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-480x286.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-640x382.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-960x573.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-1440x859.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-1600x955.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-1920x1146.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Server Side Rendering Process\" alt=\"Server Side Rendering Process\" data-aspect-ratio=\"0.59714285714286\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-300x179.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-1280x764.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-768x458.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-1536x917.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-2048x1222.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-480x286.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-640x382.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-960x573.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-1440x859.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-1600x955.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/server-side-rendering-process-1920x1146.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p>This approach means the client doesn\u2019t need to render the content.<\/p>\n<p>As a result, the website loads faster and offers a smoother experience.<\/p>\n<div class=\"table-responsive\">\n<table class=\"table table-primary table-striped table-hover\">\n<thead>\n<tr>\n<th scope=\"col\">Benefits of SSR<\/th>\n<th scope=\"col\">Drawbacks of SSR<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td scope=\"row\" data-before=\"Benefits of SSR\">Improved performance<\/td>\n<td data-before=\"Drawbacks of SSR\">Higher server load<\/td>\n<\/tr>\n<tr>\n<td scope=\"row\" data-before=\"Benefits of SSR\">Search engine optimization<\/td>\n<td data-before=\"Drawbacks of SSR\">Longer time to interactivity<\/td>\n<\/tr>\n<tr>\n<td scope=\"row\" data-before=\"Benefits of SSR\">Enhanced accessibility<\/td>\n<td data-before=\"Drawbacks of SSR\">Complex implementation<\/td>\n<\/tr>\n<tr>\n<td scope=\"row\" data-before=\"Benefits of SSR\">Consistent experience<\/td>\n<td data-before=\"Drawbacks of SSR\">Limited caching<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Client-Side Rendering (CSR)<\/h3>\n<p>In CSR, the client\u2014like a user, browser, or Googlebot\u2014receives a blank HTML page. Then, JavaScript runs to generate the fully rendered HTML.<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__visual-chart backlinko-image\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-300x179.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-1280x764.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-768x458.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-1536x917.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-2048x1222.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-480x286.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-640x382.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-960x573.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-1440x859.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-1600x955.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-1920x1146.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Client Side Rendering Process\" alt=\"Client Side Rendering Process\" data-aspect-ratio=\"0.59714285714286\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-300x179.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-1280x764.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-768x458.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-1536x917.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-2048x1222.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-480x286.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-640x382.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-960x573.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-1440x859.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-1600x955.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/client-side-rendering-process-1920x1146.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p>Google can render client-side, JavaScript-driven pages. But, it may delay rendering and indexing.<\/p>\n<div class=\"table-responsive\">\n<table class=\"table table-primary table-striped table-hover\">\n<thead>\n<tr>\n<th scope=\"col\">Benefits of CSR<\/th>\n<th scope=\"col\">Drawbacks of CSR<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td scope=\"row\" data-before=\"Benefits of CSR\">Reduced server load<\/td>\n<td data-before=\"Drawbacks of CSR\">Slower initial load times<\/td>\n<\/tr>\n<tr>\n<td scope=\"row\" data-before=\"Benefits of CSR\">Enhanced interactivity<\/td>\n<td data-before=\"Drawbacks of CSR\">SEO challenges<\/td>\n<\/tr>\n<tr>\n<td scope=\"row\" data-before=\"Benefits of CSR\">Improved scalability<\/td>\n<td data-before=\"Drawbacks of CSR\">Increased complexity<\/td>\n<\/tr>\n<tr>\n<td scope=\"row\" data-before=\"Benefits of CSR\">Faster page transitions<\/td>\n<td data-before=\"Drawbacks of CSR\">Performance variability<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Dynamic Rendering<\/h3>\n<p>Dynamic rendering, or prerendering, is a hybrid approach.<\/p>\n<p>Tools like Prerender.io detect Googlebot and other crawlers. They then send a fully rendered webpage from a cache.<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__visual-chart backlinko-image\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-300x250.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-1280x1068.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-768x641.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-1536x1282.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-2048x1709.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-480x401.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-640x534.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-960x801.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-1440x1202.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-1600x1335.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-1920x1602.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Dynamic Rendering Process\" alt=\"Dynamic Rendering Process\" data-aspect-ratio=\"0.83428571428571\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-300x250.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-1280x1068.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-768x641.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-1536x1282.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-2048x1709.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-480x401.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-640x534.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-960x801.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-1440x1202.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-1600x1335.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/dynamic-rendering-process-1920x1602.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p>This way, search engines don\u2019t need to run JavaScript.<\/p>\n<p>At the same time, regular users still get a CSR experience. JavaScript is executed and content is rendered on the client side.<\/p>\n<p>Google says dynamic rendering isn\u2019t cloaking. The content shown to Googlebot just needs to be the same as what users see.<\/p>\n<p>However, it warns that dynamic rendering is a temporary solution. This is due to its complexity and resource needs.<\/p>\n<div class=\"table-responsive\">\n<table class=\"table table-primary table-striped table-hover\">\n<thead>\n<tr>\n<th scope=\"col\">Benefits of Dynamic Rendering<\/th>\n<th scope=\"col\">Drawbacks of Dynamic Rendering<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td scope=\"row\" data-before=\"Benefits of Dynamic Rendering\">Better SEO<\/td>\n<td data-before=\"Drawbacks of Dynamic Rendering\">Complex setup<\/td>\n<\/tr>\n<tr>\n<td scope=\"row\" data-before=\"Benefits of Dynamic Rendering\">Crawler compatibility<\/td>\n<td data-before=\"Drawbacks of Dynamic Rendering\">Risk of cloaking<\/td>\n<\/tr>\n<tr>\n<td scope=\"row\" data-before=\"Benefits of Dynamic Rendering\">Optimized UX<\/td>\n<td data-before=\"Drawbacks of Dynamic Rendering\">Tool dependency<\/td>\n<\/tr>\n<tr>\n<td scope=\"row\" data-before=\"Benefits of Dynamic Rendering\">Scalable for large sites<\/td>\n<td data-before=\"Drawbacks of Dynamic Rendering\">Performance latency<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<h3>Which Rendering Approach is Right for You?<\/h3>\n<p>The right rendering approach depends on several factors.<\/p>\n<p>Here are key considerations to help you determine the best solution for your website:<\/p>\n<div class=\"table-responsive\">\n<table class=\"table table-primary table-striped table-hover\">\n<thead>\n<tr>\n<th scope=\"col\">Rendering Option<\/th>\n<th scope=\"col\">Best for<\/th>\n<th scope=\"col\">When to Choose<\/th>\n<th scope=\"col\">Requirements<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td class=\"strong\" scope=\"row\" data-before=\"Rendering Option\">Server-Side Rendering (SSR)<\/td>\n<td data-before=\"Best for\">SEO-critical sites (e.g., ecommerce, blogs)<\/p>\n<p>Sites relying on organic traffic<\/p>\n<p>Faster Core Web Vitals (e.g., LCP)<\/p>\n<\/td>\n<td data-before=\"When to Choose\">Need timely indexing and visibility<\/p>\n<p>Users expect fast, fully-rendered pages upon load<\/p>\n<\/td>\n<td data-before=\"Requirements\">Strong server infrastructure to handle higher load<\/p>\n<p>Expertise in SSR frameworks (e.g., Next.js, Nuxt.js)<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td class=\"strong\" scope=\"row\" data-before=\"Rendering Option\">Client-Side Rendering (CSR)<\/td>\n<td data-before=\"Best for\">Highly dynamic user interfaces (e.g., dashboards, web apps)<\/p>\n<p>Content not dependent on organic traffic (e.g. behind login)<\/p>\n<\/td>\n<td data-before=\"When to Choose\">SEO is not a top priority<\/p>\n<p>Focus on reducing server load and scaling for large audiences<\/p>\n<\/td>\n<td data-before=\"Requirements\">JavaScript optimization to address performance issues<\/p>\n<p>Ensuring crawlability with fallback content<\/p>\n<\/td>\n<\/tr>\n<tr>\n<td class=\"strong\" scope=\"row\" data-before=\"Rendering Option\">Dynamic Rendering<\/td>\n<td data-before=\"Best for\">JavaScript-heavy sites needing search engine access<\/p>\n<p>Large-scale, dynamic content websites<\/p>\n<\/td>\n<td data-before=\"When to Choose\">SSR is resource-intensive for the entire site<\/p>\n<p>Need to balance bot crawling with user-focused interactivity<\/p>\n<\/td>\n<td data-before=\"Requirements\">Pre-rendering tool like Prerender.io<\/p>\n<p>Bot detection and routing configuration<\/p>\n<p>Regular audits to avoid cloaking risks<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>Knowing these technical solutions is important. But the best approach depends on how your website uses JavaScript.<\/p>\n<p>Where does your site fit?<\/p>\n<ul>\n<li><strong>Minimal JavaScript:<\/strong> Most content is in the HTML (e.g., WordPress sites). Just make sure search engines can see key text and links.<\/li>\n<li><strong>Moderate JavaScript:<\/strong> Some elements load dynamically, like live chat, AJAX-based widgets, or interactive product filters. Use fallbacks or dynamic rendering to keep content crawlable.<\/li>\n<li><strong>Heavy JavaScript:<\/strong> Your site depends on JavaScript to load most content, like SPAs built with React or Vue. To make sure Google can see it, you may need SSR or pre-rendering.<\/li>\n<li><strong>Fully JavaScript-rendered:<\/strong> Everything from content to navigation relies on JavaScript (e.g., Next.js, Gatsby). You\u2019ll need SSR or Static Site Generation (SSG), optimized hydration, and proper metadata handling to stay SEO-friendly.<\/li>\n<\/ul>\n<p>The more JavaScript your site relies on, the more important it is to optimize for SEO.<\/p>\n<h2>JavaScript SEO Best Practices<\/h2>\n<p>So, your site looks great to users\u2014but what about Google?<\/p>\n<p>If search engines can\u2019t properly crawl or render your JavaScript, your rankings could take a hit.<\/p>\n<p>The good news? You can fix it.<\/p>\n<p>Here\u2019s how to make sure your JavaScript-powered site is fully optimized for search.<\/p>\n<h3>1. Ensure Crawlability<\/h3>\n<p>Avoid blocking JavaScript files in the robots.txt file to ensure Google can crawl them.<\/p>\n<p>In the past, HTML-based websites often blocked JavaScript and CSS.<\/p>\n<p>Now, crawling JavaScript files is crucial for accessing and rendering key content.<\/p>\n<h3>2. Choose the Optimal Rendering Method<\/h3>\n<p>It\u2019s crucial to choose the right approach based on your site\u2019s needs.<\/p>\n<p>This decision may depend on your resources, user goals, and vision for your website. Remember:<\/p>\n<ul>\n<li>Server-side rendering: Ensures content is fully rendered and indexable upon page load. This improves visibility and user experience.<\/li>\n<li>Client-side rendering: Renders content on the client side, offering better interactivity for users<\/li>\n<li>Dynamic rendering: Sends crawlers pre-rendered HTML and users a CSR experience<\/li>\n<\/ul>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__visual-chart backlinko-image\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-300x277.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-1280x1184.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-768x710.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-1536x1420.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-2048x1894.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-480x444.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-640x592.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-960x888.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-1440x1332.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-1600x1480.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-1920x1776.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Rendering Options\" alt=\"Rendering Options\" data-aspect-ratio=\"0.92428571428571\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-300x277.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-1280x1184.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-768x710.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-1536x1420.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-2048x1894.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-480x444.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-640x592.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-960x888.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-1440x1332.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-1600x1480.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/rendering-options-1920x1776.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<h3>3. Reduce JavaScript Resources<\/h3>\n<p>Reduce JavaScript size by removing unused or unnecessary code. Even unused code must be accessed and processed by Google.<\/p>\n<p>Combine multiple JavaScript files to reduce the resources Googlebot needs to execute. This helps improve efficiency.<\/p>\n<h3>4. Defer Scripts Blocking Content<\/h3>\n<p>You can defer render-blocking JavaScript to speed up page loading.<\/p>\n<p>Use the \u201cdefer\u201d attribute to do this, as shown below:<\/p>\n<pre style=\"padding-left: 20px;\"><script defer=\"defer\" src=\"https:\/\/backlinko.com\/your-script.js\"\/><\/pre>\nThis tells browsers and search engines to run the code once the main CSS and JavaScript have loaded.\n<h3>5. Manage JavaScript-Generated Content<\/h3>\nManaging JavaScript content is key. It must be accessible to search engines and provide a smooth user experience.\nHere are some best practices to optimize it for SEO:\n<h4>Provide Fallback Content<\/h4>\n<ul>\n<li>Use the <noscript> tag to show essential info if JavaScript fails or is disabled<\/noscript><\/li>\n<li>Ensure critical content like navigation and headings is included in the initial HTML<\/li>\n<\/ul>\n<p>For example, Yahoo uses a <noscript> tag. It shows static product details for JavaScript-heavy pages.<\/noscript><\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-300x58.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-1280x247.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-768x148.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-1536x297.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-2048x396.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-480x93.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-640x124.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-960x185.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-1440x278.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-1600x309.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-1920x371.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Yahoo \u2013 Noscript tag\" alt=\"Yahoo \u2013 Noscript tag\" data-aspect-ratio=\"0.19285714285714\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-300x58.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-1280x247.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-768x148.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-1536x297.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-2048x396.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-480x93.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-640x124.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-960x185.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-1440x278.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-1600x309.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/yahoo-noscript-tag-1920x371.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<h4>Optimize JavaScript-Based Pagination<\/h4>\n<p>For instance, Skechers employs a \u201cLoad More\u201d button that generates accessible URLs:<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-300x208.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-1280x886.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-768x532.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-1536x1064.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-2048x1418.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-480x332.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-640x443.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-960x665.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-1440x997.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-1600x1108.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-1920x1329.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Sketchers \u2013 Load More\" alt=\"Sketchers \u2013 Load More\" data-aspect-ratio=\"0.69285714285714\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-300x208.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-1280x886.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-768x532.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-1536x1064.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-2048x1418.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-480x332.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-640x443.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-960x665.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-1440x997.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-1600x1108.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sketchers-load-more-1920x1329.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<h4>Test and Verify Rendering<\/h4>\n<ul>\n<li>Use Google Search Console\u2019s (GSC) URL Inspection Tool and Screaming Frog to check JavaScript content. Is it accessible?<\/li>\n<li>Test JavaScript execution using browser automation tools like Puppeteer to ensure proper rendering<\/li>\n<\/ul>\n<p>Confirm Dynamic Content Loads Correctly<\/p>\n<ul>\n<li>Use loading=\u201dlazy\u201d for <a title=\"Image SEO: 15 Tips for Image Optimization\" href=\"https:\/\/backlinko.com\/image-seo#:~:text=12.%20Use%20lazy%20loading\" target=\"_blank\" rel=\"noopener\">lazy-loaded elements<\/a> and verify they appear in rendered HTML<\/li>\n<li>Provide fallback content for dynamically loaded elements to ensure visibility to crawlers<\/li>\n<\/ul>\n<p>For example, Backlinko lazy loads images within HTML:<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-300x277.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-1280x1181.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-768x709.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-1536x1417.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-2048x1890.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-480x443.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-640x591.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-960x886.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-1440x1329.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-1600x1476.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-1920x1772.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Image loading \u2013 Lazy\" alt=\"Image loading \u2013 Lazy\" data-aspect-ratio=\"0.92285714285714\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-300x277.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-1280x1181.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-768x709.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-1536x1417.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-2048x1890.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-480x443.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-640x591.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-960x886.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-1440x1329.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-1600x1476.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/image-loading-lazy-1920x1772.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<h3>6. Create Developer-Friendly Processes<\/h3>\n<p>Working closely with developers is key to integrating JavaScript and SEO best practices.<\/p>\n<p>Here\u2019s how you can streamline the process:<\/p>\n<ol>\n<li><strong>Spot the issues:<\/strong> Use tools like Screaming Frog or Chrome DevTools. They can find JavaScript rendering issues. Document these early.<\/li>\n<li><strong>Write actionable tickets:<\/strong> Write clear SEO dev tickets with the issue, its SEO impact, and step-by-step instructions to fix it. For example, here\u2019s a <a title=\"Writing an Effective SEO Development Ticket - Edwin Romero\" href=\"https:\/\/www.edwindanromero.com\/writing-an-effective-seo-development-ticket\/\" target=\"_blank\" rel=\"noopener\">sample dev ticket<\/a>:<br \/>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-300x267.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-1280x1138.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-768x683.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-1536x1366.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-2048x1821.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-480x427.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-640x569.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-960x854.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-1440x1280.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-1600x1423.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-1920x1707.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Sample \u2013 Dev Ticket\" alt=\"Sample \u2013 Dev Ticket\" data-aspect-ratio=\"0.88857142857143\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-300x267.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-1280x1138.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-768x683.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-1536x1366.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-2048x1821.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-480x427.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-640x569.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-960x854.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-1440x1280.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-1600x1423.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/sample-dev-ticket-1920x1707.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<\/li>\n<li><strong>Test and validate fixes:<\/strong> Conduct quality assurance (QA) to ensure fixes are implemented correctly. Share updates and results with your team to maintain alignment.<\/li>\n<li><strong>Collaborate in real time:<\/strong> Use <a title=\"9 Best SEO Software Tools Trusted by 7-Figure Agencies\" href=\"https:\/\/backlinko.com\/seo-software-agencies#notion\" target=\"_blank\" rel=\"noopener\">project management tools<\/a> like Notion, Jira, or Trello. These help ensure smooth communication between SEOs and developers.<\/li>\n<\/ol>\n<p>By building developer-friendly processes, you can solve JavaScript SEO issues faster. This also creates a collaborative environment that helps the whole team.<\/p>\n<p>Communicating SEO best practices for JavaScript usage is as crucial as its implementation.<\/p>\n<h2>JavaScript SEO Resources + Tools<\/h2>\n<p>As you learn how to make your javascript SEO friendly\u200b, several tools can assist you in the process.<\/p>\n<h3>Educational Resources<\/h3>\n<p>Google has provided or contributed to some great resources:<\/p>\n<h4>Understand JavaScript SEO Basics<\/h4>\n<p>Google\u2019s <a title=\"Understand JavaScript SEO Basics | Google Search Central | Documentation\" href=\"https:\/\/developers.google.com\/search\/docs\/crawling-indexing\/javascript\/javascript-seo-basics\" target=\"_blank\" rel=\"noopener\">JavaScript basics<\/a> documentation explains how it processes JavaScript content.<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-300x168.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-1280x716.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-768x429.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-1536x859.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-2048x1145.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-480x268.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-640x358.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-960x537.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-1440x805.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-1600x895.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-1920x1074.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Google JavaScript \u2013 Basics\" alt=\"Google JavaScript \u2013 Basics\" data-aspect-ratio=\"0.55857142857143\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-300x168.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-1280x716.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-768x429.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-1536x859.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-2048x1145.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-480x268.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-640x358.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-960x537.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-1440x805.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-1600x895.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/google-javascript-basics-1920x1074.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p><strong>What you\u2019ll learn:<\/strong><\/p>\n<ul>\n<li>How Google processes JavaScript content, including crawling, rendering, and indexing<\/li>\n<li>Best practices for ensuring JavaScript-based websites are fully optimized for search engines<\/li>\n<li>Common pitfalls to avoid and strategies to improve SEO performance on JavaScript-driven websites<\/li>\n<\/ul>\n<p><strong>Who it\u2019s for:<\/strong> Developers and SEO professionals optimizing JavaScript-heavy sites.<\/p>\n<h4>Rendering on the Web<\/h4>\n<p>The web.dev article <a title=\"Rendering on the Web | Articles\" href=\"https:\/\/web.dev\/articles\/rendering-on-the-web\" target=\"_blank\" rel=\"noopener\">Rendering on the Web<\/a> is a comprehensive resource. It explores various web rendering techniques, including SSR, CSR, and prerendering.<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-300x220.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-1280x937.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-768x562.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-1536x1125.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-2048x1500.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-480x352.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-640x469.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-960x703.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-1440x1055.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-1600x1172.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-1920x1406.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Webdev \u2013 Rendering on Web\" alt=\"Webdev \u2013 Rendering on Web\" data-aspect-ratio=\"0.73285714285714\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-300x220.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-1280x937.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-768x562.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-1536x1125.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-2048x1500.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-480x352.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-640x469.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-960x703.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-1440x1055.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-1600x1172.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webdev-rendering-on-web-1920x1406.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p><strong>What you\u2019ll learn:<\/strong><\/p>\n<ul>\n<li>An in-depth overview of web rendering techniques<\/li>\n<li>Performance implications of each rendering method. And how they affect user experience and SEO.<\/li>\n<li>Actionable insights for choosing the right rendering strategy based on your goals<\/li>\n<\/ul>\n<p><strong>Who it\u2019s for:<\/strong> Marketers, developers, and SEOs wanting to boost performance and visibility.<\/p>\n<h3>Diagnostic Tools<\/h3>\n<h4>Screaming Frog &amp; Sitebulb<\/h4>\n<p>Crawlers such as <a title=\"Screaming Frog SEO Spider Website Crawler\" href=\"https:\/\/www.screamingfrog.co.uk\/seo-spider\/\" target=\"_blank\" rel=\"noopener\">Screaming Frog<\/a> or <a title=\"Sitebulb\" href=\"https:\/\/sitebulb.com\/\" target=\"_blank\" rel=\"noopener\">Sitebulb<\/a> help identify issues affecting JavaScript.<\/p>\n<p>How? By simulating how search engines process your site.<\/p>\n<p><strong>Key features:<\/strong><\/p>\n<ul>\n<li><strong>Crawl JavaScript websites:<\/strong> Detect blocked or inaccessible JavaScript files using robots.txt configurations<\/li>\n<li><strong>Render simulation:<\/strong> Crawl and visualize how JavaScript-rendered pages appear to search engines<\/li>\n<li><strong>Debugging capabilities:<\/strong> Identify rendering issues, missing content, or broken resources preventing proper indexing<\/li>\n<\/ul>\n<p><strong>Example use case:<\/strong><\/p>\n<ul>\n<li>Use Screaming Frog\u2019s robots.txt settings to emulate Googlebot. The tool can confirm if critical JavaScript files are accessible.<\/li>\n<\/ul>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-300x213.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-1280x907.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-768x544.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-1536x1088.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-2048x1451.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-480x340.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-640x453.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-960x680.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-1440x1020.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-1600x1133.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-1920x1360.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Screaming Frog \u2013 Robots Settings\" alt=\"Screaming Frog \u2013 Robots Settings\" data-aspect-ratio=\"0.70857142857143\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-300x213.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-1280x907.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-768x544.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-1536x1088.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-2048x1451.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-480x340.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-640x453.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-960x680.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-1440x1020.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-1600x1133.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/screaming-frog-robots-settings-1920x1360.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p><strong>When to use:<\/strong><\/p>\n<ul>\n<li>Debugging JavaScript-related indexing problems<\/li>\n<li>Testing rendering issues with pre-rendered or dynamic content<\/li>\n<\/ul>\n<h4>Semrush Site Audit<\/h4>\n<p>Semrush\u2019s <a title=\"Site Audit: Improve the SEO of Your Website | Semrush\" href=\"https:\/\/www.semrush.com\/siteaudit\/?utm_campaign=javascript-seo&amp;utm_source=backlinko.com&amp;utm_medium=referral\" target=\"_blank\" rel=\"noopener\">Site Audit<\/a> is a powerful tool for diagnosing JavaScript SEO issues.<\/p>\n<p><strong>Key features:<\/strong><\/p>\n<ul>\n<li><strong>Crawlability checks:<\/strong> Identifies JavaScript files that hinder rendering and indexing<\/li>\n<li><strong>Rendering insights:<\/strong> Detects JavaScript-related errors impacting search engines\u2019 ability to process content<\/li>\n<li><strong>Performance metrics:<\/strong> Highlights Core Web Vitals like LCP and Total Blocking Time (TBT)<\/li>\n<li><strong>Actionable fixes:<\/strong> Provides recommendations to optimize JavaScript code, improve speed, and fix rendering issues<\/li>\n<\/ul>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-300x268.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-1280x1143.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-768x686.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-1536x1371.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-2048x1828.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-480x429.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-640x571.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-960x857.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-1440x1286.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-1600x1428.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-1920x1714.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Site Audit \u2013  Backlinko \u2013 Overview\" alt=\"Site Audit \u2013 Backlinko \u2013 Overview\" data-aspect-ratio=\"0.89285714285714\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-300x268.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-1280x1143.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-768x686.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-1536x1371.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-2048x1828.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-480x429.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-640x571.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-960x857.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-1440x1286.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-1600x1428.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/01\/site-audit-backlinko-overview-1920x1714.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p>Site Audit also includes a \u201cJS Impact\u201d report, which focuses on uncovering JavaScript-related issues.<\/p>\n<p>It highlights blocked files, rendering errors, and performance bottlenecks. The report provides actionable insights to enhance SEO.<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-300x148.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-1280x630.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-768x378.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-1536x756.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-2048x1008.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-480x236.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-640x315.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-960x473.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-1440x709.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-1600x788.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-1920x945.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Site Audit \u2013 Backlinko \u2013 JS Impact\" alt=\"Site Audit \u2013 Backlinko \u2013 JS Impact\" data-aspect-ratio=\"0.49285714285714\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-300x148.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-1280x630.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-768x378.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-1536x756.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-2048x1008.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-480x236.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-640x315.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-960x473.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-1440x709.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-1600x788.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/site-audit-backlinko-js-impact-1920x945.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p><strong>When to use:<\/strong><\/p>\n<ul>\n<li>Identify rendering blocking issues caused by JavaScript<\/li>\n<li>Troubleshoot performance issues after implementing large JavaScript implementations<\/li>\n<\/ul>\n<h4>Google Search Console<\/h4>\n<p><a title=\"Google Search Console: The Definitive Guide\" href=\"https:\/\/backlinko.com\/google-search-console#:~:text=Get%20The%20Most%20Out%20of%20%E2%80%9CURL%20Inspection%E2%80%9D\" target=\"_blank\" rel=\"noopener\">Google Search Console\u2019s<\/a> Inspection Tool helps analyze your JavaScript pages. It checks how Google crawls, renders, and indexes them.<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-300x237.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-1280x1009.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-768x605.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-1536x1211.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-2048x1615.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-480x378.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-640x505.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-960x757.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-1440x1135.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-1600x1261.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-1920x1514.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"GSC \u2013 URL Inspection \u2013 JS Console Messages\" alt=\"GSC \u2013 URL Inspection \u2013 JS Console Messages\" data-aspect-ratio=\"0.78857142857143\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-300x237.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-1280x1009.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-768x605.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-1536x1211.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-2048x1615.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-480x378.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-640x505.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-960x757.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-1440x1135.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-1600x1261.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/gsc-url-inspection-js-console-messages-1920x1514.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p><strong>Key features:<\/strong><\/p>\n<ul>\n<li><strong>Rendering verification:<\/strong> Check if Googlebot successfully executes and renders JavaScript content<\/li>\n<li><strong>Crawlability insights:<\/strong> Identify blocked resources or missing elements impacting indexing<\/li>\n<li><strong>Live testing:<\/strong> Use live tests to ensure real-time changes are visible to Google<\/li>\n<\/ul>\n<p><strong>Example use case:<\/strong><\/p>\n<ul>\n<li>Inspecting a JavaScript-rendered page to see if all critical content is in the rendered HTML<\/li>\n<\/ul>\n<p><strong>When to use:<\/strong><\/p>\n<ul>\n<li>Verifying JavaScript rendering and indexing<\/li>\n<li>Troubleshooting blank or incomplete content in Google\u2019s search results<\/li>\n<\/ul>\n<h3>Performance Optimization<\/h3>\n<p>You may need to test your JavaScript website\u2019s performance. These tools granularly break down performance:<\/p>\n<h4>WebPageTest<\/h4>\n<p><a title=\"WebPageTest\" href=\"https:\/\/www.webpagetest.org\/\" target=\"_blank\" rel=\"noopener\">WebPageTest<\/a> helps analyze website performance, including how JavaScript affects load times and rendering.<\/p>\n<p>The screenshot below shows high-level performance metrics for a JavaScript site. It includes when the webpage was visible to users.<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-300x134.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-1280x570.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-768x342.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-1536x684.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-2048x913.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-480x214.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-640x285.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-960x428.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-1440x642.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-1600x713.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-1920x856.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Webpagetest \u2013 Page Performance Metrics\" alt=\"Webpagetest \u2013 Page Performance Metrics\" data-aspect-ratio=\"0.44571428571429\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-300x134.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-1280x570.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-768x342.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-1536x684.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-2048x913.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-480x214.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-640x285.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-960x428.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-1440x642.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-1600x713.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/webpagetest-page-performance-metrics-1920x856.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p><strong>Key features:<\/strong><\/p>\n<ul>\n<li>Provides waterfall charts to visualize the loading sequence of JavaScript and other resources<\/li>\n<li>Measures critical performance metrics like Time to First Byte (TTFB) and LCP<\/li>\n<li>Simulates slow networks and mobile devices to identify JavaScript bottlenecks<\/li>\n<\/ul>\n<p><strong>Use case:<\/strong> Finding scripts or elements that slow down page load and affect Core Web Vitals.<\/p>\n<h4>GTMetrix<\/h4>\n<p><a title=\"GTmetrix\" href=\"https:\/\/gtmetrix.com\/\" target=\"_blank\" rel=\"noopener\">GTmetrix<\/a> helps measure and optimize website performance, focusing on JavaScript-related delays and efficiency.<\/p>\n<p><strong>Key features:<\/strong><\/p>\n<ul>\n<li>Breaks down page performance with actionable insights for JavaScript optimization<\/li>\n<li>Provides specific recommendations to minimize and defer non-critical JavaScript<\/li>\n<li>Visualizes load behavior with video playback and waterfall charts to pinpoint render delays<\/li>\n<\/ul>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-300x186.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-1280x794.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-768x476.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-1536x952.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-2048x1270.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-480x298.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-640x397.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-960x595.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-1440x893.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-1600x992.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-1920x1190.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"GTmetrix \u2013 Waterfall \u2013 Images \u2013 Report\" alt=\"GTmetrix \u2013 Waterfall \u2013 Images \u2013 Report\" data-aspect-ratio=\"0.62\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-300x186.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-1280x794.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-768x476.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-1536x952.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-2048x1270.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-480x298.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-640x397.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-960x595.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-1440x893.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-1600x992.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2024\/09\/gtmetrix-waterfall-images-report-1920x1190.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p><strong>Use case:<\/strong> Optimizing JavaScript delivery to boost page speed and user experience. This includes minifying, deferring, or splitting code.<\/p>\n<h4>Chrome DevTools &amp; Lighthouse<\/h4>\n<p><a title=\"Chrome DevTools\" href=\"https:\/\/developer.chrome.com\/docs\/devtools\" target=\"_blank\" rel=\"noopener\">Chrome DevTools<\/a> and Lighthouse are free Chrome tools. They assess site performance and accessibility. Both are key for JavaScript SEO.<\/p>\n<p><strong>Key features:<\/strong><\/p>\n<ul>\n<li><strong>JavaScript execution analysis:<\/strong> Audits JavaScript execution time. It also identifies scripts that delay rendering or impact Core Web Vitals.<\/li>\n<li><strong>Script optimization:<\/strong> Flags opportunities for code splitting, lazy loading, and removing unused JavaScript<\/li>\n<li><strong>Network and coverage insights:<\/strong> Identifies render-blocking resources, unused JavaScript, and large file sizes<\/li>\n<li><strong>Performance audits:<\/strong> Lighthouse measures critical Core Web Vitals to pinpoint areas for improvement<\/li>\n<li><strong>Render simulation:<\/strong> It emulates devices, throttles network speeds, and disables JavaScript. This alleviates rendering issues.<\/li>\n<\/ul>\n<p>For example, the below screenshot is taken with DevTools\u2019s <a title=\"Analyze runtime performance | Chrome DevTools\" href=\"https:\/\/developer.chrome.com\/docs\/devtools\/performance\" target=\"_blank\" rel=\"noopener\">Performance<\/a> panel. After page load, various pieces of data are recorded to assess the culprit of heavy load times.<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-300x162.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-1280x690.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-768x414.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-1536x828.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-2048x1104.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-480x259.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-640x345.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-960x518.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-1440x776.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-1600x863.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-1920x1035.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"Chrome \u2013 Performance report\" alt=\"Chrome \u2013 Performance report\" data-aspect-ratio=\"0.53857142857143\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-300x162.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-1280x690.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-768x414.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-1536x828.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-2048x1104.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-480x259.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-640x345.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-960x518.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-1440x776.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-1600x863.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/chrome-performance-report-1920x1035.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p><strong>Use cases:<\/strong><\/p>\n<ul>\n<li>Testing JavaScript-heavy pages for performance bottlenecks, rendering issues, and SEO blockers<\/li>\n<li>Identifying and optimizing scripts, ensuring key content is crawlable and indexable<\/li>\n<\/ul>\n<h3>Specialized Tools<\/h3>\n<p><a title=\"Prerender.io\" href=\"http:\/\/Prerender.io\" target=\"_blank\" rel=\"noopener\">Prerender.io<\/a> helps JavaScript-heavy websites by serving pre-rendered HTML to bots.<\/p>\n<p>This allows search engines to crawl and index content while users get a dynamic CSR experience.<\/p>\n<figure style=\"max-width: 700px\" class=\"backlinko-image__screenshot backlinko-image backlinko-has-border\"><picture><source type=\"image\/webp\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager.webp 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-300x202.webp 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-1280x862.webp 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-768x517.webp 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-1536x1035.webp 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-2048x1380.webp 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-480x323.webp 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-640x431.webp 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-960x647.webp 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-1440x970.webp 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-1600x1078.webp 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-1920x1293.webp 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\"><img decoding=\"async\" style=\"max-width: 700px !important\" title=\"PreRender \u2013 Cache Manager\" alt=\"PreRender \u2013 Cache Manager\" data-aspect-ratio=\"0.67428571428571\" src=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager.png\" srcset=\"https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager.png 2500w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-300x202.png 300w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-1280x862.png 1280w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-768x517.png 768w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-1536x1035.png 1536w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-2048x1380.png 2048w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-480x323.png 480w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-640x431.png 640w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-960x647.png 960w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-1440x970.png 1440w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-1600x1078.png 1600w, https:\/\/api.backlinko.com\/app\/uploads\/2025\/02\/prerender-cache-manager-1920x1293.png 1920w\" sizes=\"(max-width: 700px) 100vw, 700px\" loading=\"lazy\"\/><\/source><\/picture><\/figure>\n<p><strong>Key features:<\/strong><\/p>\n<ul>\n<li><strong>Pre-rendered content:<\/strong> Serves a cached, fully rendered HTML page to search engine crawlers like Googlebot<\/li>\n<li><strong>Easy integration:<\/strong> Compatible with frameworks like React, Vue, and Angular. It also integrates with servers like NGINX or Apache.<\/li>\n<li><strong>Scalable solution:<\/strong> Ideal for large, dynamic sites with thousands of pages<\/li>\n<li><strong>Bot detection:<\/strong> Identifies search engine bots and serves optimized content<\/li>\n<li><strong>Performance optimization:<\/strong> Reduces server load by offloading rendering to Prerender.io\u2019s service<\/li>\n<\/ul>\n<p><strong>Benefits:<\/strong><\/p>\n<ul>\n<li>Ensures full crawlability and indexing of JavaScript content<\/li>\n<li>Improves search engine rankings by eliminating blank or incomplete pages<\/li>\n<li>Balances SEO performance and user experience for JavaScript-heavy sites<\/li>\n<\/ul>\n<p><strong>When to use:<\/strong><\/p>\n<ul>\n<li>For Single-Page Applications or dynamic JavaScript frameworks<\/li>\n<li>As an alternative to SSR when resources are limited<\/li>\n<\/ul>\n<h2>Find Your Next JavaScript SEO Opportunity Today<\/h2>\n<p>Most JavaScript SEO problems stay hidden\u2014until your rankings drop.<\/p>\n<p>Is your site at risk?<\/p>\n<p>Don\u2019t wait for traffic losses to find out.<\/p>\n<p>Run an audit, fix rendering issues, and make sure search engines see your content.<\/p>\n<p>Want more practical fixes?<\/p>\n<p>Check out our guides on <a title=\"Page Speed and SEO: The Complete Guide\" href=\"https:\/\/backlinko.com\/hub\/seo\/pagespeed\" target=\"_blank\" rel=\"noopener\">PageSpeed<\/a> and <a title=\"Core Web Vitals: Essential Guide to Better Site Performance\" href=\"https:\/\/backlinko.com\/hub\/seo\/core-web-vitals\" target=\"_blank\" rel=\"noopener\">Core Web Vitals<\/a> for actionable steps to speed up your JavaScript-powered site.<\/p>\n<\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>JavaScript has enabled highly interactive and dynamic websites. But it also presents a challenge: ensuring your site is crawlable, indexable, and fast. That\u2019s why JavaScript SEO is essential. When applied correctly, these strategies can significantly boost organic search performance. For instance, book retailer Follet saw a remarkable recovery after fixing JavaScript issues: That\u2019s the impact [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":114091,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[98],"tags":[9174,29091,16681,15021,12733],"dealstore":[],"offerexpiration":[],"class_list":["post-114090","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-marketing","tag-boost","tag-javascript","tag-practices","tag-rankings","tag-seo"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What Is JavaScript SEO? 6 Best Practices to Boost Rankings - Som2ny Network<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/fivemor.com\/?p=114090\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What Is JavaScript SEO? 6 Best Practices to Boost Rankings - Som2ny Network\" \/>\n<meta property=\"og:description\" content=\"JavaScript has enabled highly interactive and dynamic websites. 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