Firefox for iOS has a night mode to reduce webpage brightness while browsing. Perfect for those late night surfing sessions!
Enable Night Mode
Tap the menu button at the bottom of the screen (the menu will be at the top right if you're using an iPad):
- Tap to reduce the brightness.
To set Firefox for iOS back to normal brightness, repeat the above two steps.
You can also customize the appearance by changing the app theme between light or dark mode.