Brightness Slider Per Tab by Darren

Adjust brightness per tab. Minimal permissions. Low resource usage.

4.9 (7 reviews)

941 Users

Download Firefox and get the extension

Download file

About this extension

Adds a plain brightness slider menu popup icon.
No background scripts using up resources.
*Few permissions needed.
The above two properties mean that page reloads and changes will clear the brightness. However, it can be immediately re-applied by either clicking the icon or by using the shortcut.

Shortcut: ctrl+shift+L (configure in about:addons -> gear icon -> "Manage Extension Shortcuts").
Use the shortcut, press tab to select the slider, then use left/right arrows to adjust brightness, and then escape to hide the slider. Page up/down can be used to change brightness with a higher step size.

For a more permanent brightness option, see https://raw.githubusercontent.com/dkameoka/brightness-addon/main/userContent.css

Developer comments

Firefox disallows changes to their sites to prevent abuse/malware, so this and other addons like it will only work outside of these sites.

The brightness CSS filter applied to <html> does not currently apply to backgrounds with the "fixed" property; presumed to be a Firefox bug.

Rated 4.9 by 7 reviewers

Brightness Slider Per Tab by Darren

Required permissions:

Data collection: