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Squared Australis Tabs


A small and simple extension, which replaces the curved tabs of the Australis design (Firefox v29+) with squared ones, similar to Firefox v28 and prior. Furthermore it gives you some options like "tabs on bottom".


Important: This extension works with Windows (XP, Vista, 7, 8 and 10), Linux (tested with Ubuntu) and Mac OS (see review). In lack of Apple hardware I can't test future releases.



- "Tabs on bottom" (configurable).
- "Classic tab background" (configurable).
- "Disable the space between tabs" (configurable).
- "Transparency for unloaded tabs" (configurable).
- "Favicon for new tabs" (configurable).
- "Disable the Aero fog" (configurable).
- "Disable the close buttons" (configurable).
- "Minimal tab width" (configurable).
- "Maximal tab width" (configurable).
- Support for Tab Utilities Fixed (Faviconized Tabs, Tab-Stacking, etc.).
- Less wide pinned and faviconized tabs.
- Overall less waste of space in height and width than the default Australis tabs.


Squared Australis Tabs for Thunderbird:

This extension is also available for Thunderbird: Squared Australis Tabs (Tb).


Special thanks to Aris for the inspiration, learning and his general work as a nice and good AMO editor. For more adjustments of the Australis design try his great Classic Theme Restorer (Customize UI).


I hope you like it. Have fun! :-)

Download files:


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