Learn what "cookies" are, how websites use them, and how you can manage the cookies that Firefox stores.
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Cookies and other data is stored on your computer by websites you visit. Learn how to block websites from storing this data in Firefox.
Firefox stores your personal information and settings in a profile folder. Find out what is in your profile and how to locate it.
This article describes how to troubleshoot problems that involve websites reporting that cookies are blocked or disabled.
Learn how to delete cookies that store website preferences and login status, remove site data and clear cached web content in Firefox.
The Firefox cache temporarily stores parts of websites you visit. Learn how to clear it to fix issues with how websites work or look.
Some advertisers use third-party cookies to track your visits to the various websites on which they advertise. Learn more.
This article describes how to remove the Firefox application from your computer and also how to remove the personal information that Firefox stores.
Did Firefox save my login info? Did this website save it? How do I control what gets entered automatically? We'll explain how this works so can take control.
If you need to create a new Firefox profile, find out how to recover your old Firefox data such as bookmarks, history and passwords.