Some of the title was not fully anti-translated (include playing videos, Channels name, channels About page etc.)
I think it do not need API keys because this keys are very censor, and its difficult to get them too.
So the peoples that wants to prevent YouTube auto-translation, please don't give too much expect about this anti-translater and use it at your own risk (may leak your YouTube personal information, include history)
About my computer:
Macbook Air 2015 Early 128GB
macOS 10.14.6
Firefox 115.0.3esr
Some of the title was not fully anti-translated (include playing videos, Channels name, channels About page etc.) I think it do not need API keys because this keys are very censor, and its difficult to get them too. So the peoples that wants to prevent YouTube auto-translation, please don't give too much expect about this anti-translater and use it at your own risk (may leak your YouTube personal information, include history)
About my computer: Macbook Air 2015 Early 128GB macOS 10.14.6 Firefox 115.0.3esr