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.

To clear your history (cookies, browsing history, cache, etc.) all at once, see Delete browsing, search and download history on Firefox.

Clear the cache

In the Menu bar at the top of the screen, click and select . Click the menu button and select . Click the menu button and select .
Select the panel.
In the Cookies and Site Data section, click Clear Data….
Remove the check mark in front of Cookies and Site Data.
- For more information about managing site data, see Manage local site storage settings.
With Cached Web Content check marked, click the Clear button.
Close the about:preferences page. Any changes you've made will automatically be saved.

Automatically clear the cache

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

In the Menu bar at the top of the screen, click and select . Click the menu button and select . Click the menu button and select .
Select the panel and go to the History section.
In the drop-down menu next to Firefox will, choose .
Select the check box for Clear history when Firefox closes.
Beside Clear history when Firefox closes, click the Settings… button. The Settings for Clearing History window will open.
In the Settings for Clearing History window, put a check mark next to Cache.
- For more information on the other options preferences, see Delete browsing, search and download history on Firefox.
Click OK to close the Settings for Clearing History window.
Close the about:preferences page. Any changes you've made will automatically be saved.

Tip: There are several add-ons available that will allow you to clear the cache using an icon on your toolbar. Go to the Mozilla Add-ons Web Page to do a search. The Mozilla community is not responsible for maintaining and supporting third-party add-ons. Please contact the add-on developer directly if you need assistance with an add-on.