I believe the developer is using a simple built-in function in Firefox, but has made it readily available by clicking an icon.

Would be great for reading except it doesn't work when Column Reader app has been applied. [Edit: I just tried mFull addon instead and it works in reader mode].

Also, implementing the suggested bug fix might allow annoying websites to go full screen independently. Anyway, to exit full screen, just press [ESC] or [F11].

实用耐玩，好助手也！功能强大，速度快

Good

Best app

Ok

Good

I was using the protect VPN which restricted backing processing when attempt using Firefox for the first encounter issues such network dropping out ever time I was either receiving pop ups from messening apps or phone apps had to uninstall protect VPN now experiencing smoother Network interaction with Android system settings and Firefox Mozilla features