Unintuitive. Firefox needs tab grouping like in Edge. This is not it. I don't my group tabs hidden away in some sub menu.

Nice Extension, but...

This has the potential to become better than (recommended) Private Bookmarks. Locked files load much faster, which should be the goal with all hidden files extensions.

As creator stated - timer is deactivated if locked file is unlocked with timer activated, and browser closed. This leaves those files unlocked. Would like to see this extension auto lock open files when browser closed with timer(s) activated on unlocked file folders. Possible to rewrite timer to allow for this option?

Why no initial "Master" password setup?

1) Anyone can lock your unlocked bookmarks file folders by right clicking on any file folder and locking them on you with their own password - (better have a hidden bookmark backup file handy)...

2) Anyone can also click on Firefox "Tools, Add-ons" and remove Bookmark Folders Locker extension. Locked folders can't be unlocked until you figure out what has happened, and reinstall the extension. Would be a nice feature to have the initial Master password required to remove extension.

Hope this review helps with future development.