Sites and apps similar to Can I use include HTML5test, which is free and open source. Other options are Can I email, HTML5 Please, VScode CSS Compatibility and QuirksMode.org Compatibility Tables. In total there are five Compatibility Layer Tools like Can I use.
This is a website for testing web standards in the browser. The HTML5 test score is an indication of how well your browser supports the HTML5 standard and related specifications. Find out which parts of HTML5 are supported by your browser today and compare the results with other...
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.
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.
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.
Netherlands
EU
Germany