JavaScript frameworks create the interactive experiences your users expect. But when important content only appears after JavaScript runs, search engines and AI crawlers may receive an incomplete version of the page.
Prerender.io serves crawlers complete, cached HTML while visitors continue using the same React, Angular, Vue, Ember, Backbone, or custom JavaScript application.
The content available to a crawler depends on when it appears and whether that crawler executes JavaScript.
Your frontend can remain interactive for visitors and readable for crawlers. Prerender.io works outside the framework itself, so your team can improve technical access without replacing an application that already works.
Serve complete HTML to Googlebot, Bingbot, recognized AI crawlers, social bots, and additional user agents configured by your team. Crawlers receive the public content that appears after the JavaScript application finishes rendering.
Return cached HTML instead of requiring every supported crawler to download and execute the application. This makes the crawler-facing response easier to inspect, test, and monitor across important routes.
Give crawlers access to the page copy, internal links, titles, canonical tags, and structured data they need to evaluate each public URL. Prerendering improves access but does not guarantee indexing or rankings.
Set recache rules around how frequently your content changes. Prerender.io can refresh stored HTML so supported crawlers receive an up-to-date representation of each cached page.
Integrate through the CDN, reverse proxy, or web server handling crawler requests—not inside the frontend framework. This approach works across React, Angular, Vue, Ember, Backbone, custom SPAs, and other client-rendered JavaScript stacks.
We’ve seen a strong performance increase after implementing Prerender. This has translated into tangible revenue growth for our business.
Shopping directly in LLMs doesn’t quite exist yet, but it will soon. We’re using Prerender.io® to help us stay visible in AI search when that day comes.
Before Prerender.io, our AngularJS single-page app faced indexing issues. Prerender’s easy integration quickly led to thousands of our pages being crawled and indexed, boosting our organic traffic significantly. Their responsive support was a bonus!
I saw value almost immediately – within about a week. I could see the uptick in Google crawling activity right after implementing Prerender, and the social media previews started working properly. Those were both immediate wins that I really valued.
Enhancing the Pagespeed Insights (PSI) score for my React website was a challenge. Fortunately, I found Prerender. Their easy setup required no additional development efforts… I was elated to see my PSI score turn green!
Indexing is really fast thanks to Prerender. At this point, the indexing is on 10k pages per day. For us, that’s perfect.
We were serving Google fully rendered pages across 5700+ URLs per month in no time.
We definitely saw an uptick in search… It was literally within hours of implementation, and our team was like, ‘Oh, problems solved.’
Keep the JavaScript experience your users know while giving search and AI crawlers complete HTML they can retrieve and understand.
Prerender.io works with JavaScript frameworks including React, Angular, Vue, Ember, and Backbone, as well as custom client-rendered applications. Because it integrates at the CDN, reverse proxy, or web-server layer, it does not depend on a specific component library or build tool. Find the right setup in the Prerender.io integration guides.
Prerender.io does not always replace server-side rendering or static generation. SSR and SSG can be strong architectural choices when a team wants to generate HTML for users and crawlers and can maintain that rendering pipeline. Prerender.io is often the lower-disruption option when an existing client-rendered application needs crawler-ready HTML.
Prerender.io can improve the technical SEO foundation of a JavaScript website by giving supported crawlers complete HTML, links, metadata, and structured data. That removes the crawler’s dependency on executing the frontend application. It does not guarantee indexing or rankings; content quality, authority, technical signals, and search-engine systems still influence results. Read about the JavaScript SEO problems prerendering can address.
