Delete site storage for individual websites. In the Cookies and Site Data section, click Manage Data…. You'll see a list of sites and how much information each site is storing on your computer. Click the site you want to remove and click Remove Selected (or click Remove All to remove all stored cookies and site data). Click Save Changes to
What's stored in your Firefox history? There are various types of data in your Firefox history, and they all do different things. That means each one will have a different effect if you delete it. These are types of data you can remove from your browsing history in Firefox: Browsing and download history.
Click on the History menu and Show Full History. Now select 'Clear browsing data' in the left sidebar. A new web page will open with the option to 'Clear the following items from…'. Choose a time period for which you want to clear data and then check the boxes next to the data you want to delete. Click Clear Data.
Click the menu button and then click History. Click Clear Recent History… to open the dialog window. In the Clear Recent History window, set Time range to clear: to Everything. To remove browsing history, make sure Browsing & Download History has a check mark next to it. To remove search history, check the box next to Form & Search History.
To clear your browsing history manually, open the "Library" menu and choose how much of your history you want to clear. To set Firefox to clear your history automatically, access the "Preferences . 144 145 76 403 422 300 132 31

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