Javascript SEO, Solved

Get higher rankings by serving crawlers a static HTML version of your Javascript website, without compromising your customers’ experience.

Prerender® has served 58 Billion web pages to search engine crawlers

Javascript SEO, Solved

Trusted by Developers and Webmasters at some of the biggest and fastest-growing web properties

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Dynamic Rendering is Microsoft’s suggested solution for rendering JavaScript, and Prerender® is specifically recommended by Google in their

docs for developers

Dynamic Rendering: The Solution for Visitors and Search Engines

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Client-Side Rendering

When a user visits a JavaScript site, their browser downloads several files and executes the code to figure out how the page should look. This is called ​client-side rendering​ because it uses the computing power of the client device.

That’s fine for most human users, but search engine crawlers move quickly, learning as much as possible without using up their computing resources. So when they find a JavaScript site, they might ​read only a few pages and get an incomplete picture of it.

Client-Side Rendering
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Server-Side Rendering

Crawlers also ​have a second queue for rendering, adding JavaScript sites to the index too late, resulting in poor rankings.

JavaScript sites can be rendered on the server side instead, but doing so is hard work for the server, can be tricky and produce slow or lost interactive elements.

Server-Side Rendering
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Dynamic Rendering

That’s where ​dynamic rendering​ comes in. The server can distinguish between human and robot, giving the human the full experience and the robot a lightweight HTML version.

Dynamic rendering is preferred by search engines and comes without an SEO penalty for cloaking content, making it the clear best choice.

Dynamic Rendering

Prerender® can seamlessly render Javascript built with the most popular frameworks & libraries

Before using Prerender®, our site had challenges with crawling and our pages were largely not indexed due to the site being a single-page app using AngularJS. Most of the options we looked at required an extensive amount of work, which also translated to very high costs.  Prerender® provided an easy to use and effective solution to the problem. Within days of integrating with Prerender®, we immediately saw tens of thousands of our pages being crawled and indexed by Google. Our organic traffic naturally saw a very steady increase over the next few months.  Prerender's support was great and responsive in the rare instances that we needed it.

Uman Chan
Uman Chan
The Vitamin Shoppe

Why use Prerender®?

Leave Google and Your Users Happy.

Prerender’s middleware detects when Google pays your website a visit, producing an easily-crawled version. Human users see the dynamic Javascript version, leaving you in control of their experience.

Google-Recommended

Google and Bing suggest dynamic rendering solutions to fix JavaScript rendering issues. In fact, Google’s docs specifically recommend Prerender®, so you can focus on development and leave SEO to the marketers.

Easy, Reliable, Scalable Service

Just a quick install of our middleware is all you need. Prerender’s hosted service takes care of the rest with a 99.9% service commitment.

Open Source and Community-Supported

Prerender® is maintained by a passionate community of industry experts who care about the software. They’ve got solutions whatever your configuration. You can even build your own server.