Firefox settings
Extensions are not allowed to open built-in about: pages (Settings, Add-ons manager,
etc.). Use the shortcuts below or the Firefox menu instead.
Settings
Ctrl + , · Windows / Linux
⌘ + , · macOS
Or menu: ☰ → Settings
Website shortcut tiles
On the new tab page, use Edit shortcuts at the bottom of the card, or open Add-ons → New Tab → ⋯ → Options (this extension’s settings tab).
Add-ons manager
Ctrl + Shift + A · Windows / Linux
⌘ + Shift + A · macOS
Or use the Add-ons quick link on the new tab (opens Mozilla Add-ons in a tab).