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How to clear the Firefox cache

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 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 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 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.
    clearhistorywhenFXclosesfx42
  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.
    SettingsForClearingHistoryFX42bd
  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.
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Comments

How to open the options for the linux part could be more obvious, a screenshot would help

See /forums/knowledge-base-articles/693745 for related discussions about this article.

Kadir, for Firefox 4, there are as many screenshots on Linux as on Windows or Mac, that is three. For Firefox 3.6, we no longer add screenshots. So what's wrong on Linux?

This article is highly rated and one of our top articles BUT, it's not the solution that we use in our forum all the time. For basic trouble with a website we always recommend clearing the cache AND cookies. The canned response follows the steps in Websites don't load - troubleshoot and fix error messages.

In addition, clearing the cache automatically when Firefox closes has nothing to do with fixing website issues. Also, that is covered in Delete browsing, search and download history on Firefox.

So I propose that we change this article to use the instructions for clearing both cookies and cache and remove the section about automatically clearing the cache on quit.

We should make that change and NOT mark it ready for localization so we can see how it performs.

See also:

This is a "How to" article, originally named "How to clear the cache". The name was changed recently to "Clear the cache - Delete temporary Internet files to fix common website issues" but this is not a "troubleshooting" article about fixing website issues (or at least it didn't start out that way).

Changing the instructions was discussed awhile back and an experiment was made to change the article to use the "Clear recent history" steps. See:

(from Chris Ilias, page 2 March 26, 2010 1:35:48 PM) Using the Clear Recent History instructions actually brought the scores down.

According to the article History. Chris Ilias then reverted the change and switched back to using the advanced settings instructions, on Apr 5, 2010

Verdi said

So I propose that we change this article to use the instructions for clearing both cookies and cache and remove the section about automatically clearing the cache on quit.

This "How to" article answers the simple question "How do I clear the cache?". If you want to add steps for clearing cookies as well as clearing the cache, I think it would make more sense to create a new "troubleshooting" article based on step 2 of Troubleshoot and diagnose Firefox problems to clear both cache and cookies.

Thanks for the history Alice. In that case we should change the name of this article back. I personally don't see much need to regularly clear the cache except to fix a problem but I understand people like to do it.

Verdi said

Thanks for the history Alice. In that case we should change the name of this article back.

I tried renaming the article back to "How to clear the cache" but I get a message, "Document with this Title and Locale already exists."

How about I rename it "How do I clear the cache?" ... or "Clear the cache"?

Hunterbug

Im agree 2..But its true the people become most of part pure lazy.Most of problems im see its from computer of user is loot of mistakes in pc is registy, and sometimes dont need clean cache need use only ccleaner to fix that and work. Some people 2 dont have anti virus or dont care abou update and with lot pf malwares and virus how can work browsing?

A better name then the first two I suggested is "How to clear the Firefox cache" based on the second sentence in the article's introduction, which is, This article describes how to clear the Firefox cache".

AliceWyman said

Verdi said
Thanks for the history Alice. In that case we should change the name of this article back.

I tried renaming the article back to "How to clear the cache" but I get a message, "Document with this Title and Locale already exists."

How about I rename it "How do I clear the cache?" ... or "Clear the cache"?

I renamed this article "How to clear the Firefox cache".

Joergen

Hi

Could we get a revision of this article marked as ready for localization? The latest one is from Nov 16, 2014 .

Joergen

Hi Joergen, also we need to update the "Image:clear settings incontent" with new one, the Help button is now beside the Cancel and Ok button. :-)

To update my previous post

also in 42, 43... the Saved Passwords under Data not exist any more, only the Site Preferences remains.

we need a new screenshot for this one also

thanks

ideato said

Hi Joergen, also we need to update the "Image:clear settings incontent" with new one, the Help button is now beside the Cancel and Ok button. :-)

I uploaded a new image if you want to add it to the article: [[Image:SettingsForClearingHistory]]

SettingsForClearingHistory

Since the only difference from the current "Image:clear settings incontent" shown below,

clear settings incontent

....is the placement of OK Cancel and Help buttons, I don't think it should hold up marking the article ready to localize.

What do you think?

I added a "Needs Change" entry for the localizatiion and screenshot issues.

I made a new revision to add the new "Settings for Clearing History" image starting in the current Firefox version since I don't know when it changed. I left the revision pending review.

Done, L10 also.

Joergen

Thanks guys.

Joergen

ideato said

in 42, 43... the Saved Passwords under Data not exist any more, only the Site Preferences remains. we need a new screenshot for this one also

I'll set up a new "Needs change" entry for this one with a link back to this discussion.

Thanks again.

P.S. The "Privacy" panel could also use a new screenshot since Firefox 42 now includes the option, "Use Tracking Protection in Private Windows".

For later use, 42 :-)

SettingsForClearingHistoryff42

Image:SettingsForClearingHistoryff42

ideato said

For later use, 42 :-) Image:SettingsForClearingHistoryff42

Thanks. I made a new revision to add that image for fx42 (pending review)

Looks like the second image was left out for 39-41 by mistake in r106554 so today seems an excellent day for quick approving its fix after the previous “purge-only” revision.