Hi Glen, where do you normally view your bookmarks? For example:

• menu bar > Bookmarks menu
• Bookmarks Sidebar (Command+B)
• Library window (Command+Shift+O)

Do they all show the same problem, or is it specific to one of those lists?

Could you check the "Restore" menu in the Library window and see whether there was a recent unusual change in the number of items in your automatic bookmark backups (just by looking at the menu items, not by rolling back your bookmarks)? The following article describes how to find that menu: Restore bookmarks from backup or move them to another computer.

Thanks for thinking about my question.

All three methods for showing bookmarks show the same long, undifferentiated list.

The library window does not have a visible 'restore' command.

Is there a way to restore the bookmarks from a previous backup?

Best Regards,

Glen

Hi Glen, Restore is on one of the little menus in the Library window. The support article I linked mentions this icon:

As a Windows person, I can't confirm that myself.

Sure enough, that icon reveals the restore menu.

There is no great change in the number of items. Do you suppose there is some point in regressing the bookmarks in hopes that folders might return from an earlier record?

If it was normal within the past few days, I think it is worth a try. If you want a reference copy of what you have right now, you can use the Export feature first, which creates a readable HTML page of clickable links:

Export Firefox bookmarks to an HTML file to back up or transfer bookmarks

I wasn't clear. The folders have been missing for over a week. What I was considering was finding the bookmarks in a Time Machine backup and putting them into the current Firefox.

Time Machine might have more files from the bookmarkbackups folder than Firefox currently shows.

If you want to see what is in a compressed backup file before restoring it, I have a tool to convert the file to an HTML page of clickable links that can be indented to show the folder structure.

https://www.jeffersonscher.com/ffu/bookbackreader.html

Okay, it's all back, including passwords. I used a backup library from two weeks ago. One or two bookmarks won't be there, but the main resources are all there.

Thanks for directing my attention to the restore command in the library.