[dillondoyle]

You'd have to get rid of a ton of modern features and somehow backfill / update all browsers to a set of constants

- audio waveform generation - access to gpu/webgl info - have to somehow dramatically change or remove ICE/webrtc - standardize 'feature flags' e.g. somehow backfill old browser so they all show support for new JS objects - access to only a small set of fonts - somehow make rendering completely the same across browsers or remove measurement/rendering to like 5px increments or something. e.g. bounding rect of (747744.888some two character specific font or some svgcss transform etc) - testing for a ton of css extensions - supported mime types - a bunch of SVG things (i dont think this has been explored much i have a hunch there are some good targets) - a bunch of latency hacks and more...

[alkonaut]

Things like string measurement is indeed tricky. Audio generation or reading back raster data simply shouldn’t be possible by default. I’d be happy to enable that on a per site basis like pop ups.