This tool helps identify the parts of the page that aren't server-side rendered. It loads the provided URL twice: once with JavaScript disabled to show the server-rendered version of the page, and once with JavaScript enabled to show the regular version.

Both versions are displayed side-by-side for a visual comparison to test Server-side rendering (SSR).

Server-side rendering refers to generating the page content on the server-side. (Read more.)

Indexing of content that isn't server-side rendered is delayed by Googlebot and skipped by some other bots. Also, server-side generated content displays faster for the visitors.

Yes. I am gathering feedback from SEO experts, website owners, product managers and front-end developers to improve this tool.

Results for the tests run by the users not logged-in are stored for 2 days and those run by logged-in users are stored for 7 days.

I (Punit Sethi) originally created this tool to communicate Server-side rendering (SSR) issues with the teams I worked with. With passing time, SEO professionals, website owners, product managers and frontend developers across the internet have been using this tool to visually test SSR issues.

Yes, please! I am actively looking to improve this tool. So, if you find an issue or have a feature to request, please email me on punit@tezify.com. Smaller bugs may be fixed within a few hours while new feature may take longer (depending on the nature of the request).