You can check for problems with the places.sqlite database file in the Firefox profile folder.

• http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox
• https://support.mozilla.org/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file

• Places Maintenance: https://addons.mozilla.org/firefox/addon/places-maintenance/

• http://kb.mozillazine.org/Backing_up_and_restoring_bookmarks_-_Firefox
• https://support.mozilla.org/kb/restore-bookmarks-from-backup-or-move-them

Tghanks for the quick response, but although I have found the places.sqlite file in the profile folder, I am not clear how to open it truthfully??

Thanks*

Also, I am curious if this is just a troublehsooting tip for the deletion of the bookmarks, or if the lost bookmarks may actually be in this file, and can be restored from it....

Thanks in advance either way!!

Firefox keeps backups of the bookmarks in the bookmarkbackups folder as compressed .jsonlz4 files. You will lose the history when you remove the places.sqlite file.

You can remove all places.sqlite file(s) in the Firefox profile folder to make Firefox rebuild the places.sqlite database from the most recent JSON backup (bookmarks-YYYY-MM-DD_<item count>_<hash>.json) in the bookmarkbackups folder.

If the most recent backup doesn't work then try to restore an older JSON backup.

• https://support.mozilla.org/kb/restore-bookmarks-from-backup-or-move-them
• http://kb.mozillazine.org/Backing_up_and_restoring_bookmarks_-_Firefox

cor-el said

Firefox keeps backups of the bookmarks in the bookmarkbackups folder as compressed .jsonlz4 files. You will lose the history when you remove the places.sqlite file. You can remove all places.sqlite file(s) in the Firefox profile folder to make Firefox rebuild the places.sqlite database from the most recent JSON backup (bookmarks-YYYY-MM-DD_<item count>_<hash>.json) in the bookmarkbackups folder. If the most recent backup doesn't work then try to restore an older JSON backup.

• https://support.mozilla.org/kb/restore-bookmarks-from-backup-or-move-them
• http://kb.mozillazine.org/Backing_up_and_restoring_bookmarks_-_Firefox

Thank you for the correct reply, but I had already found the jsonlz backup, and imported my previous bookmarks.... Now I am just trying to reset all of my logins correctly, but again, thanks for the assistance!! \^V^/

I'm absolutely sunk here on this one....Please someone help me...Firefox crashed whilst a system update was going on and reloaded a fresh FF version, and saved an old firefox data on the desktop. Judging by the size of the squite file it must contain all my previous but....I've tried import data but to no avail. This should be made far more easier to recover. It keeps asking for HTML data when there isn't....F H S make it easier !

Hi richwalter

The size of the places.sqlite file is fixed to multiples of 10 MB and the size as such shouldn't imply that it contains the bookmarks and more importantly that the file isn't corrupted as can easily happen when Firefox crashes.

Did you check the bookmarkbackups folder in the current Firefox profile folder and in the profile folder that Firefox saved to the "Old Firefox Data" folder on the desktop?

If copying the places.sqlite file from the "Old Firefox Data" folder on the desktop to the current profile folder doesn't restore the bookmarks then you need to restore a JSON backup, either from the current profile folder if Firefox managed to recover them or from the "Old Firefox Data" folder on the desktop.

• https://support.mozilla.org/kb/restore-bookmarks-from-backup-or-move-them
• https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile

You can use this button to go to the current Firefox profile folder:

• Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder)
• http://kb.mozillazine.org/Profile_folder_-_Firefox