I think the Spotify application may be able to, I assume this is what OP was talking about.
Comment on It really fucks with my recommendations, but fuck em™
qaz@lemmy.world 1 day agoI don’t think a site can view your system volume. They can however see if a tab is specifically muted developer.mozilla.org/en-US/docs/…/MutedInfo
Alk@sh.itjust.works 1 day ago
Xkdrxodrixkr@feddit.org 8 hours ago
afaik Spotify Cannot see if a tab is muted. The method you’re referring to is part of the tabs API, which can only be used by extensions that have been given permission to the tabs api