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Explain Original Profile

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  • 最近回覆由 cor-el
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I'm trying to understand Profiles, especially since I am transitioning to a new laptop.

On my older machine, I have an Original Profile. Since I've never specifically created a profile, I assume that Original Profile contains my current Settings, Bookmarks, etc. Is that a correct assumption?

My new machine also has an Original Profile. Do I need to copy my Original Profile from my older machine to the newer machine? Should I rename the profile on the new machine or leave it as Original Profile?

I'm trying to understand Profiles, especially since I am transitioning to a new laptop. On my older machine, I have an Original Profile. Since I've never specifically created a profile, I assume that Original Profile contains my current Settings, Bookmarks, etc. Is that a correct assumption? My new machine also has an Original Profile. Do I need to copy my Original Profile from my older machine to the newer machine? Should I rename the profile on the new machine or leave it as Original Profile?

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You can copy certain files with Firefox closed from one profile folder to another/current profile folder to transfer/recover/backup your personal data. Note that best is to avoid restoring a full profile folder and only restore important files that are safe to restore/transfer.

You can use the button in "Help -> More Troubleshooting Information" (about:support) to go to the current Firefox profile folder or use the about:profiles page (Root directory).


  • 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)
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