Is there a browser compatibility checker for websites? (lemmy.world)

submitted 1 week ago by Maroon@lemmy.world to c/opensource@lemmy.ml

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I have made a website in simple HTML and CSS (no JS).

I hope it would be compatible with as many browsers as possible.

Is there a free and open source solution that can test and reveal the oldest version of each browser compatible with my site? I want to be able to say something like: This site is compatible with FF v60, Chromium v50, Safari vxx, etc.

Or make a compatibility table so users can know that this was tested.

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[-] JRaccoon@discuss.tchncs.de 9 points 1 week ago

Most browser compatibility issues come from JavaScript, not HTML/CSS. Unless you want to support ancient/dead browsers (like Internet Explorer or non-HTML5 browsers), it's very likely there won't be any issues.

MDN has a compatibility table for every HTML tag and CSS property. For a simple static site I would just manually check there.

this post was submitted on 05 Jan 2026

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