Hi sjm80, sorry to hear about this problem. Desktop installations of Firefox typically make a daily bookmark backup. You can try restoring one of those files to replace the older set you have now. If you need to mix and match, you can convert a backup file to an HTML format for reference or importing. (1) Restore feature Please see this article: [[Restore bookmarks from backup or move them to another computer]] (2) Converter I have a converter on my website here: https://www.jeffersonscher.com/ffu/bookbackreader.html The backups are stored in your active Firefox profile folder. To access that, use either * "3-bar" menu button > "?" Help > Troubleshooting Information * (menu bar) Help > Troubleshooting Information * type or paste '''about:support''' in the address bar and press Enter In the first table on the page, on the Profile Folder row, click the "Open Folder" button. This should launch a new window listing various files and folders in Windows/File Explorer. ''If you use a Mac, the button is labeled "Show in Finder". If Finder highlights an icon with a semi-random name like a1b2c3d4.default, double-click it to display the contents of that profile folder.'' Then double-click into the '''bookmarkbackups''' folder to find the compressed backup files. Note that they cannot be opened directly due to the compression. ---- Any progress so far?