Count Tabs for Firefox

Inspired by another Firefox addon with similar functionality, Count Tabs is a simple-to-use and straightforward tool that gets integrated with Mozilla's browser to count all currently opened tabs and show their number in a tiny icon.

It comes in handy to Firefox users who typically keep numerous tabs opened at all times for multitasking. Being constantly reminded by the number of pages you wish to handle simultaneously can help improve your productivity and focus on individual tasks by filtering tabs and closing the ones which aren't urgent.

Count Tabs gets installed effortlessly. It works with the newest Firefox editions, only requires to access browser tabs, and requires no configuration. In fact, it doesn't have an options panel that can be visited to review settings, which is the case of other browser addons.

Once enabled, the extension shows a blue icon next to the menu, which reveals the number of all opened tabs. Even pinned tabs are taken into account. The tool continuously checks the sum of tabs, so any modifications are immediately reflected in its icon. Only the tabs available in the current Firefox window are counted, which means that, if you have multiple instances running, each with a different number of tabs, then the app counts them separately (by instance).

We tried stressing it out by opening numerous tabs (over 200) in our tests but Count Tabs behaved normally. No errors occurred because of this. Although the project is rather simplistic, it's practical for some users. Count Tabs is free and open source, released under the Mozilla Public License, which means that you can review the code on the developer's website, modify it and further implement it into your own development projects.

If you're interested in another project dedicated to Firefox tabs, you can check out Tab Session Manager, made by the same developer.