How to clear the Firefox cache

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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 New Fx Menu Fx57Menu and choose Options.Preferences.
  2. Select the Advanced panel.
  3. Click on the Network tab.
  4. In the Cached Web Content section, click Clear Now.
    Clear Cache Win1 fx11 Clear Cache Mac1 fx11 Clear Cache Lin1 fx11 clear cache incontent
  5. 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:

  1. Click the menu button New Fx Menu Fx57Menu and choose Options.Preferences.
  2. Select the Privacy panel.
  3. In the History section, set Firefox will: to Use custom settings for history.
  4. Select the check box for Clear history when Firefox closes.
    Clear Cache Win2 Clear Cache Mac2 Clear Cache Lin2 always clear in content
  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.
    Clear Cache Win3 Clear Cache Mac3 Clear Cache Lin3 clear settings incontent SettingsForClearingHistory
  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.

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.