Ctrl + Shift + A to search tabs on Firefox

By default, this opens the addons manager. This configuration will change the behavior to search tabs instead, similar to chromium-based browsers.

- Copy autoconfig.jstodefaults\prefsof your installation folder. So the full path of the copied file would look likeC:\Program Files\Mozilla Firefox\defaults\pref\autoconfig.js.

- Copy firefox.cfgto install folder root. Full path would look likeC:\Program Files\Mozilla Firefox\firefox.cfg.

- Restart firefox if it was open. Ctrl + Shift + A should now open tab search.

Reference: https://support.mozilla.org/en-US/kb/customizing-firefox-using-autoconfig. Working on Firefox v157, which is the latest stable version at the time of writing.