Many sites are seemingly not tested at all. I recently tried to open a concert site and couldn't get any details on a concert, because their PDF viewer was buggy; I tried on both Firefox and chrome using three different computers, as well as my phone. I wish you could just use the browser's built-in PDF viewer in an iframe (or better yet, don't use PDFs in the browser)
You can just embed the browsers pdf viewer... It doesn't work on mobile browsers generally, but with some hacking you can get it to fall back to a download link.
It was always hard to gauge for me how much other professionals do, presumably all professionals tests on Chrome, Edge, IE, Safari, Firefox as a minimum? It's so easy nowadays with web services to say least check first view?
Most apps are interactive now and are hard to test on multiple platforms (ie it takes time). Even youtube has some performance issues on different browsers.
YouTube is made by a browser maker, ie. it has a motive to make non-Chrome browsers look worse. Eg. when chromium-based Edge came out, YT served it an old version of itself for no apparent reason.
Within the past week, I wanted to check out how YouTube handles graceful degradation when browsed with something like NetSurf. Spoiler alert: it just doesn't. It wasn't that long ago that such a cavalier attitude would have been unacceptable, if not unthinkable. See https://blog.chriszacharias.com/a-conspiracy-to-kill-ie6.
I also need to test on IE (since our biggest client uses it) so I have to spin up a Windows 10 VM and test it that way. Absolutely worth the time, time spent increases exponentially if a bug is found later in the process.
How unpleasant. Have you found that the W10 VM takes way more disk space then seems reasonable? I had to fire one up the other day, and between the VM image and the VM it took 50ish gigs of space iirc.
