Semrush Site Audit can now render JavaScript

Does your site use JavaScript (JS)? It probably does like most websites.

If so, you can use us Website audit tool to discover more problems than before.

Google renders your web pages’ downloaded JS to see its full content and to make sure your online visitors can easily access everything too. Now our website audit bots deliver JavaScript in the same way to identify any hidden issues on your website.

Here’s how we were able to do it.

What’s New in Site Audit?

We’ve allocated more resources so we can crawl and render your site’s JavaScript. This means that we can correctly crawl sites built largely on JavaScript, even when rendered to the client.

To show you the difference, check out a before and after:

Here is one audit with JS rendering enabled and another audit (from the same site) with JS disabled.

Do you see the big difference between the number of errors and warnings before and after? With JS enabled, it can properly identify the issues that need to be fixed.

How does JavaScript affect SEO and why does it matter?

JavaScript rendering is when a website’s JavaScript files are properly executed and displayed to website visitors.

How those files change from lines of code to an interactive website on your browser can happen in a few ways (such as client-side vs. server-side rendering). Each has its advantages and disadvantages. However, sites using JS and client-side rendering may run into trouble creep problemsespecially for technology audit bots.

Why does this...