How to clear the Firefox cache

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Firefox Firefox Last updated: 03/16/2024 54% of users voted this helpful

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. In the Menu bar at the top of the screen, click Firefox and then select Preferences or Settings, depending on your macOS version.Click the menu button Fx89menuButton and select Settings.
  2. Select the Privacy & Security panel.
  3. In the Cookies and Site Data section, click Clear Data….
    Fx91CookiesAndSiteData-ClearCache
  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 Settings page. Any changes you've made will automatically be saved.
Tip: Here's another way to clear the Firefox cache:
  1. Click the menu button Fx89menuButton to open the menu panel.
  2. Click History and select Clear Recent History….
  3. 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.
See this article for details.

Automatically clear the cache

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

  1. In the Menu bar at the top of the screen, click Firefox and then select Preferences or Settings, depending on your macOS version.Click the menu button Fx89menuButton and select Settings.
  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.
    Fx100Custom-ClearHistoryWhenFirefoxCloses
  4. Select the check box for Clear history when Firefox closes.
  5. Click the Settings… button. The Settings for Clearing History window will open.
  6. Put a check mark next to Cache and make sure other items you want to keep are not selected.
    Fx100SettingsForClearingHistory-Cache
  7. Click OK to close the Settings for Clearing History window.
  8. Close the Settings page. Any changes you've made will automatically be saved.

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