Compatibility tables for support of HTML5, CSS3, SVG and more in desktop and mobile browsers.

VScode CSS Compatibility is described as 'A VS Code extension to check, on hover, which CSS syntax, keywords, types, or functions are compatible or supported with all browsers and their versions' and is a compatibility layer tool in the os & utilities category. There are six alternatives to VScode CSS Compatibility for Web-based and Google Chrome. The best VScode CSS Compatibility alternative is Can I use, which is both free and Open Source. Other great apps like VScode CSS Compatibility are Pair & Compare, Can I email, HTML5 Please and QuirksMode.org Compatibility Tables.
Compatibility tables for support of HTML5, CSS3, SVG and more in desktop and mobile browsers.

Pair & Compare is a web application that lets you find the best fonts and font-pairings for your next project easily and smoothly.







Look up HTML5, CSS3, etc features, know if they are ready for use, and if so find out how you should use them – with polyfills, fallbacks or as they are.

My Compatibility Tables are by far the most popular resource on this site. Here you find the master table that contains links to the individual tables.
Hover over code on any webpage to see documentation. Like your IDE, but everywhere. Works on documentation sites and AI chat apps like ChatGPT and Claude.



