Firefed is a tool, run in command-line mode, that allows you to inspect Firefox profiles. It is possible to extract stored passwords, preferences, plugins, and history (https://github.com/numirias/firefed).

These are the options available for the firefed script:

This tool reads the profiles.ini file that is located in your username firefox profile.

In window operating system this file is located in C:UsersusernameAppDataRoamingMozillaFirefox.

Also you can detect this folder with the %APPDATA%MozillaFirefoxProfiles command.

More information can be found in the official documentation from the mozilla website: https://support.mozilla.org/en-US/kb/profiles-where-firefox-stores-user-data#w_how-do-i-find-my-profile.