Review for Password Exporter by Kyle
Rated 5 out of 5 stars
For those still looking for a solution in Firefox Quantum where these addons no longer work, I have created a simple application called FF Password Exporter for exporting your passwords from Firefox 58+ to a portable CSV or JSON format. It works on Windows, macOS, and Linux. You can download it from GitHub here: https://github.com/kspearrin/ff-password-exporter
To create your own collections, you must have a Mozilla Add-ons account.