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.

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:

1. Right-click on the tab
2. 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.

1. Select the tabs you want to unload (Ctrl + Click on Windows and Linux, Command + Click on Mac)
2. Right-click one of these tabs and select Unload Tabs

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