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How to transfer Firefox Most Visited Sites, Browser History and account settings from my old PC to my new PC?

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I have a new HP Pavilion 24 AiO PC. I want to transfer all of my browser settings, most visited sites and history from my old PC to this new PC within Firefox. Can I just Copy/Paste these settings from my old PC to the new one?

I have a new HP Pavilion 24 AiO PC. I want to transfer all of my browser settings, most visited sites and history from my old PC to this new PC within Firefox. Can I just Copy/Paste these settings from my old PC to the new one?

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You can copy certain files with Firefox closed to the current profile folder to transfer/recover/backup your personal data. Note that best is to avoid copying a full profile folder.


  • 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 (decryption 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)