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After doing a Firefox reset all of my Firefox-unique bookmarks disappeared, replaced by my OTHER Edge bookmarks. How do I access my Firefox bookmarks?

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  • Last reply by cor-el

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You could tell me where my Firefox bookmarks went to and how to restore them. The JSONLZ4 FILES on my Old Firefox Data file doesn't open for me.

You could tell me where my Firefox bookmarks went to and how to restore them. The JSONLZ4 FILES on my Old Firefox Data file doesn't open for me.

All Replies (4)

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i believe the correct answer is the places.sqlite file

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if you have access to your old ff data , import the places file into your new profile. Hope this helps

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What about the rest of your profile? Settings, bookmarks, history, passwords . . . .


Look on your desktop. Do you see a folder called; Old Firefox? Look inside. Look for the folder with the latest creation date.

https://support.mozilla.org/en-US/kb/recovering-important-data-from-an-old-profile

https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles

https://support.mozilla.org/en-US/kb/how-run-firefox-when-profile-missing-inaccessible

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Note that you need to restore compressed .jsonlz4 backups in the Bookmarks Manager (Library).

  • Bookmarks -> Show All Bookmarks -> Import & Backup -> Restore

If you have a problem with restoring a JSON backup then check for issues with places.sqlite in the Firefox profile folder. If you use Sync then best is to disconnect Sync temporarily during troubleshooting.

This can be caused by a problem with the places.sqlite and favicons.sqlite databases in the Firefox profile folder.

  • use "Verify Integrity" button on the "Help -> Troubleshooting Information" (about:support) page

If errors are reported with "Verify Integrity", close and restart Firefox or reboot and retry.

If "Verify Integrity" cannot repair places.sqlite, rename/remove all places.sqlite and favicons.sqlite files in the Firefox profile folder with Firefox closed. Firefox will rebuild places.sqlite and restore the bookmarks from a recent JSON backup in the bookmarkbackups folder.

  • keep a backup copy of places.sqlite in case a new places.sqlite database has to be created

See also:

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