The Firefox cache temporarily stores images, scripts, and other parts of websites you visit in order to speed up your browsing experience. This article describes how to clear the cache.

Clear the cache

1. Click the menu button and choose Options.Preferences.
2. Select the Privacy & Security panel.
3. In the Cookies and Site Data section, click Clear Data….

   

4. Remove the check mark in front of Cookies and Site Data.
5. With Cached Web Content check marked, click the Clear button.
6. Close the about:preferences page. Any changes you've made will automatically be saved.

Tip: Here's another way to clear the Firefox cache:
Click the Library button , click History and click Clear Recent History…. Next to Time range to clear, choose Everything from the drop-down menu, select Cache in the items list, make sure other items you want to keep are not selected and then click the Clear Now button.

Automatically clear the cache

You can set Firefox to automatically clear the cache when Firefox closes:

1. Click the menu button and choose Options.Preferences.

2. Select the Privacy & Security panel and go to the History section.

3. In the drop-down menu next to Firefox will, choose Use custom settings for history.
   
4. Select the check box for Clear history when Firefox closes.

   

5. Beside Clear history when Firefox closes, click the Settings… button. The Settings for Clearing History window will open.
6. In the Settings for Clearing History window, put a check mark next to Cache.

   

7. Click OK to close the Settings for Clearing History window.
8. Close the about:preferences page. Any changes you've made will automatically be saved.