This can be done but can get messy. Is it just the bookmarks you want to sync?

Do you already have a sync account? If not:

Open an account. Note: Sync uses your e-mail and password to encrypt the data. Select only bookmarks, and whatever else you want. Note: All selected data will be shared with all members of the sync.

Type https://accounts.firefox.com/settings<enter> in the address bar.

After, add another member to the sync using the same e-mail and password

Note: Each e-mail address can only be used by one sync account. If you want to create other syncs, you will need to use other e-mail's. (This can get really messy.)

See also:

• Bookmark Dupes https://addons.mozilla.org/firefox/addon/bookmark-dupes/

I need to clarify... I have a weird issue where bookmarks "disappear". They are somewhere in the host of bookmarks. Due to this issue, I backup bookmarks often. Hence I have many backups- some with this and some with that. I would like to MERGE them and then delete the duplicates. I have very large bookmark files.

I do not think sync will help as it wants to merge from different computers (?). Suggestions??

I see. How/what format are the bookmarks files? HTML or jsonlz4? If HTML, the file can be merged into the Firefox profile.

How big/how many entries are in each file? And the current profile? Note: If the file that holds the bookmarks/history data is too large, the browser will have problems.

Here is a thought, create a new profile for as many backup files as you have. Then load each of the backup files into one of these profiles. Then use sync to combine the files together. This would take care of any duplicate entries because merging the files together could create many duplicates. Profiles: temp1, temp2, temp3 . . . .

Backups are in HTML-52.2 MB, & json 12.7. I backup to both formats each time..

Is there a way to open the HTML files into say- WORD and sort and combine there. Then say back to either json or html???

Working with a bookmark.html backup with size as you have (52 MB) to remove duplicates with an extension (i.e. via JavaScript) would take ages if it will even complete, so if you would want to try this then do this in a new clean profile.

Did you check that you didn't accidentally moved bookmarks or folder to a different position in the bookmarks folder tree ?

If you notice you lost bookmarks or accidentally deleted bookmark(s) and you haven't closed Firefox yet then you can use "Organize -> Undo" in the bookmarks manager (Bookmarks -> Show All Bookmarks) to undo this action and restore bookmark(s) you deleted accidentally or otherwise lost/misplaced. You may have to use Undo more than once (Firefox keeps a full undo stack of changes to bookmarks for the current session). Otherwise you can consider to restore the bookmarks from a JSON backup in the bookmarkbackups folder.

• Bookmarks -> Show All Bookmarks -> Import & Backup -> Restore
• https://support.mozilla.org/en-US/kb/restore-bookmarks-from-backup-or-move-them

The name of an automatically created JSON bookmarks backup in the bookmarkbackups folder includes a total item count (folders and separators included) and an hash value to prevent saving the same backup more than once. You also see this count in the Restore menu drop-down list.

• bookmarks-YYYY-MM-DD_<item count>_<hash>.jsonlz4.

know how to restore... my backups are not all the same-hence I'd like to find a way to merge that sort. Is there a database software I can dump the html/json files into?