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

Cuireadh an snáithe seo sa chartlann. Cuir ceist nua má tá cabhair uait.

Transferring profile to a new computer

  • 1 freagra
  • 1 leis an bhfadhb seo
  • 19 views
  • Freagra is déanaí ó cor-el

more options

I need to transfer my profile to a new computer (Win 10/11). Unfortunately, the guidance provided - find %APPDATA%\Mozilla\Firefox\Profiles and copy it to a flashdrive - is inadequate.

This location has multiple files. Perhaps for a Firefox designer or programmer, that's not an issue. I'm neither. I need a precise list - with exact names - of the file or files that I need to copy.

Does a "profile" consist of one file or several files? Whichever the answer, what is/are the specific names of those files?

I need to transfer my profile to a new computer (Win 10/11). Unfortunately, the guidance provided - find %APPDATA%\Mozilla\Firefox\Profiles and copy it to a flashdrive - is inadequate. This location has multiple files. Perhaps for a Firefox designer or programmer, that's not an issue. I'm neither. I need a precise list - with exact names - of the file or files that I need to copy. Does a "profile" consist of one file or several files? Whichever the answer, what is/are the specific names of those files?

All Replies (1)

more options

You can copy certain files with Firefox closed from a profile folder to the profile folder on a new device to transfer important personal data. Note that best is to avoid restoring a full profile folder and only restore important files that are safe to restore/transfer.


  • bookmarks and history: places.sqlite
  • favicons: favicons.sqlite
  • bookmark backups: compressed .jsonlz4 JSON backups in the bookmarkbackups folder
  • cookies.sqlite for the Cookies
  • formhistory.sqlite for saved autocomplete Form Data
  • logins.json (encrypted logins) and key4.db (encryption key and primary password) for logins saved in the Password Manager
  • cert9.db for certificates stored in the Certificate Manager
  • persdict.dat for words added to the spell checker dictionary
  • permissions.sqlite for Permissions and possibly content-prefs.sqlite for other website specific data (Site Preferences)
  • sessionstore.jsonlz4 for open tabs and pinned tabs (see also the sessionstore-backups folder)