SEO Rendering Diagnostics · Beta

Server-side vs Client-side URL Comparison

See how crawlers experience your pages with and without JavaScript. Perfect for spotting content, links, and modules that never make it into the SSR view.

The tool will run your URL once with JavaScript enabled and once without, then show both views.

What this URL comparison tool does

This tool runs your URL twice - once with JavaScript enabled (client-side rendering) and once with JavaScript disabled (server-side only). It then shows you full-page screenshots side by side, so you can see:

  • Primary content that only appears after JS execution.
  • Internal links or nav elements missing from the SSR view.
  • Modules that rely on client-side rendering to exist at all.

It’s a practical way to sanity check what Google and other non-JS consumers might be missing. This is an early version and will keep improving over time.

How to use the URL comparison tool

  1. Enter your URL: Paste the page you want to test into the field above and hit "Check URL".
  2. View both renders: The left side shows the page with JavaScript enabled (CSR). The right is the non-JS SSR view.
  3. Use "Compare Difference": Click the button to generate a third image that attempts to highlights pixel differences between the two.
  4. Scroll and inspect: Look for missing content, CTAs, internal links, filters or key modules that don’t exist in the SSR view.
  5. Share the result: Use the shareable link to send your comparison to devs, SEOs, or stakeholders.

Note: Some pages may have rendering issues. Let us know if you have issues, but sometimes it relates to server performance and response times. The tool will timeout if your webpage takes too long to load.