How to Position Firefox Tabs at the Bottom of Your Browser Window

Currently, most modern browsers support side tab placement, yet numerous users prefer having their Firefox tabs at the bottom. This article will guide you through the steps to achieve this adjustment, working seamlessly with the latest versions of Firefox.

How to Relocate Firefox Tabs to the Bottom?

1. Launch Firefox, click on the menu icon, navigate to Help, and then choose More Troubleshooting Information.
2. Scroll down and select the Profile folder.
3. In the new File Explorer window, double-click the chrome folder. If it’s not there, create a new folder and label it chrome.
4. Double-click the userChrome.css file or right-click on it and choose Open with > Notepad. If you just established the chrome folder, right-click on a blank area, select New > Text Document, and rename it to userChrome.css (accept the prompt for this change).
5. Visit the GitHub page, copy the script provided by jonhoo, and paste it into the userChrome.css file you created.
6. Make sure to click on File > Save to apply the changes, then close Notepad.
7. Return to Firefox, type or paste about:config into the address bar, and hit Enter.
8. Click on Accept the Risk and Continue.
9. In the search bar at the top, paste the following line: toolkit.legacyUserProfileCustomizations.stylesheets
10. Change its value to true by using the button on the right, then restart Firefox.
11. You’re all set! Your tabs will now appear at the bottom of the browser window.

While it may seem like a lengthy process, following this step-by-step guide should take you no more than three minutes. We tested this method on Firefox version 133.0 (64-bit), and it should also be compatible with earlier variations.

One important note is that if you decide to reinstall the browser, you will need to repeat this entire procedure to reposition the Firefox tabs at the bottom. Additionally, remember to modify the Boolean value of toolkit.legacyUserProfileCustomizations.stylesheets; otherwise, the script will not function correctly.

In conclusion, while Firefox does not provide a direct option for relocating the tab menu to the bottom, using a script in the userChrome.css file is a viable solution.

We’d love to hear from you—did you successfully move your Firefox tabs to the bottom, or did you encounter any difficulties? Share your experiences in the comments below.

Author: Egor Kostenko

My goal is to make complex technical topics simple and accessible. On this site, I gather unique and useful content that not only solves users’ problems but also helps them better understand the capabilities of Windows.