Yesterday I tried to create a Progressive Web App displaying an artificial horizon (inclination and heading) over a live camera view. In the past, I have developed a similar working software for iOS and was wondering if this would now also be possible with a modern mobile web browser on decent modern hardware. During the research process, I stumbled over several websites which you can use to test the hardware capabilities and their software support in web browsers and I wanted to share some links.
The most concise website seems to be What Web Can Do Today. It contains a full load of information about possible APIs, their support in your browser and a lot of additional information and programming examples.
To quickly test for WebGL support you can use get.webgl.org, which should now be standard in every modern browser.
The website HTML5test takes a more general approach and shows which HTML 5 features are supported.