In Firefox 140, you can unload tabs that you are not actively using. This helps reduce memory and CPU usage while keeping your tabs available to revisit later.
When you unload a tab, it stays visible but doesn’t take up resources in the background. When you're ready to return to it, Firefox will reload the page automatically.
Table of Contents
Unload a single tab
You can unload a single tab. Doing this lets you prioritize particular tabs without removing them from Firefox.
To do this:
- Right-click on the tab
- Select Unload Tab
This will cause the tab’s icon to gray out, indicating it’s unloaded. When you click the tab again, Firefox will automatically reload the page.
Unload multiple tabs
You can also unload multiple tabs at once if you want to perform wider tab management.
- Select the tabs you want to unload (Ctrl + Click on Windows and Linux, Command + Click on Mac)
- Right-click one of these tabs and select Unload Tabs
Related articles
Restore previous session - Configure when Firefox shows your most recent tabs and windows
Use tabs to organize lots of websites in a single window
Firefox uses too much memory or CPU resources - How to fix
Tab context menu