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https://developers.google.com/youtube/player_parameters#Parameters https://developers.google.com/youtube/player_parameters#Para... > fs > Setting this paramete

https://developers.google.com/youtube/player_parameters#Parameters https://developers.google.com/youtube/player_parameters#Para... > fs > Setting this parameter to 0 prevents the fullscreen button from displaying in the player. The default value is 1, which causes the fullscreen button to display. So yes, these website chose to do this.

Aardwolf 2y ago
Not sure if that's the one actually... it only says "disables the fullscreen button", it doesn't even specify whether it will actually prevent fullscreen through e.g. the 'f' shortcut Also, the kind of site I'm talking about has a fullscreen button visible, only when you press it it says it's disallowed But I see no other fullscreen related settings (other than the keyboard shortcut related one partially) so it could be this one of course but its description didn't catch up with reality