Link Password от FigaroSwe

All support is handle through comment and review field at https://addons.mozilla.org/sv-SE/firefox/addon/link-password/reviews/

2017-12-04: Never lost access to your bookmarks, decrypt them directly from any browser at https://linkpassword.evigfilosofi.se/

2017-11-27: Improvement of user interface for selecting bookmarks to encrypt/decrypt.

2017-11-26: Release a new version of Link Password, If you have Firefox 57, please update the addon. Do not update the addon if you not running FIrefox 57 or newer. Will in upcoming release improve the GUI for encrypt/decrypt bookmarks.

Support also encryption existing links and folders with links added.
Right-click on the link / folder you want to encrypt.

Uses its own protocol ext+linkpassword:// for easy handling and AES to encrypt the link with your password.

(AES: Advanced Encryption Standard, Is a strong encrypt algorithm, and in short nobody can help you if you lose the password that has be use for do the encryption)