This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Reduce profile size

  • 4 replies
  • 1 has this problem
  • 3 views
  • Last reply by Ed

more options

We have several users whose AppData\Roaming\Mozilla\Firefox\Profiles\xxxxx.default\storage\default folder has grown to over 1 GB. Is there a way to limit the size of this folder. These users are in a VDI environment and these files get merged into their VDI desktop which greatly increases their logon times.

We have several users whose AppData\Roaming\Mozilla\Firefox\Profiles\xxxxx.default\storage\default folder has grown to over 1 GB. Is there a way to limit the size of this folder. These users are in a VDI environment and these files get merged into their VDI desktop which greatly increases their logon times.

All Replies (4)

more options

I'm not aware of a way to do this in Firefox. You would have to set the quota in the Windows OS settings and possibly cleanup this folder. Storage is part of the cookies, but you would probably have to remove all cookies to include local storage or do this manually in "Options/Preferences -> Privacy & Security -> Clear Data or Manage Data".

more options

I think it might be helpful to look in more detail at where the big files are. For example, there are folders for:

  • websites -- folder names typically start with http
  • extensions -- folder names typically start with moz-extension
  • built-in pages -- folder names typically start with about

Within the folders, the idb folder indicates database storage. Some extensions may build very large databases and you might have a policy about such extensions.

more options

Most of it is in built-in pages. Below is one example.

about+home - 478 MB about+new - 705 MB moz-safe-about+home - 364 MB

more options

https://addons.mozilla.org/en-US/firefox/addon/clear-browsing-data/ has an option to clear Local Storage and IndexedDB.