I'm not sure it's ever been listed on https://www.youtube.com/supported_browsers https://www.youtube.com/supported_browsers but it is on https://support.google

I'm not sure it's ever been listed on https://www.youtube.com/supported_browsers https://www.youtube.com/supported_browsers but it is on https://support.google.com/youtube/answer/78358?hl=en https://support.google.com/youtube/answer/78358?hl=en and https://support.google.com/youtube/answer/175292?hl=en https://support.google.com/youtube/answer/175292?hl=en