Some websites have the ability to store information, such as files, in your local storage, and these files can only be removed manually by you. This helps the website run faster and prevents information from being lost if you lose your connection. Firefox shows you how much space is being used and lets you manage these settings to free up space.
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Access site storage settings
You can access site storage settings in your Firefox settings as follows:
- In the Menu bar at the top of the screen, click and then select or , depending on your macOS version.Click the menu button and select .
- Select the panel and go to the Cookies and Site Data section.
Delete site storage for individual websites
- In the Cookies and Site Data section, click
- Click the site you want to remove and click cookies and site data). (or click to remove all stored
- Click to finish.
For more information about clearing cookies for individual (or all) websites, see Clear cookies and site data in Firefox.
Clear data stored by all sites
- In the Cookies and Site Data section, click
- On the dropdown next to When:, select the timeframe for the data you want to clear.The Clear data dialog will open.
- Tick the checkbox next to the type of information you want to clear.
- Click the button.
For more information on clearing cached web content in Firefox, see How to clear the Firefox cache.
Allow or block websites from storing information
You can set up Firefox to always allow or block specific sites from storing information. You can also allow a site to store only for a single session.
- In the Cookies and Site Data section, click
- Type in the exact address of the site you want to allow or block, or select the site if it's already on the list.
- Click , or .
- Click to finish.
See these articles for additional information: