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transferring Firefox bookmarks and login info from a Time Machine backup

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  • Last reply by cor-el

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I recently "downgraded" from macOS Ventura back to macOS Monterey on my 2019 Macbook Pro. Is there a way to migrate all the Firefox bookmarks and login/password info that I had prior to the downgrade? I made a complete backup of the computer prior to the downgrade, but I can't find any folders with this info on the backup, just the Firefox application. I didn't make the .html or .csv files of the bookmarks or login info prior to the downgrade--didn't think it would require such steps to migrate the old info.

I recently "downgraded" from macOS Ventura back to macOS Monterey on my 2019 Macbook Pro. Is there a way to migrate all the Firefox bookmarks and login/password info that I had prior to the downgrade? I made a complete backup of the computer prior to the downgrade, but I can't find any folders with this info on the backup, just the Firefox application. I didn't make the .html or .csv files of the bookmarks or login info prior to the downgrade--didn't think it would require such steps to migrate the old info.

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The Firefox profile folder with the random name (default-release.xxxxxxxx) is normally in a hidden location in ~/Library.

Primary location used for the main profile that keeps your personal data (Root Directory on about:profiles).

  • ~/Library/Application Support/Firefox/Profiles/

See also:


  • 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/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)