I’m pretty sure all major browsers these days will display png. However not all will read color profiles and that’s why if you don’t want to experience immediate noticeable color change when uploading images convert to sRGB. Yes is a smaller colorspace but most images fit nicely in it and it’s way better than looking at let say a RGB image in a browser that doesn’t have color management. Here is an article on the topic and more.
IMO we should all be on the same page here so the easiest is to just upload sRGB instead of messing with your browser settings.
