If you want to import the bookmarks of your local Firefox installation (here: in my Tuxedo OS 3 installation, Firefox in version 130.0-1, provided by the Tuxedo OS repositories) via the "Organize Bookmarks" Library window, the following message is displayed to you: "Importing from Mozilla Firefox: Mozilla Firefox usually stores its bookmarks in places.sqlite SQLite Database. This file is usually located in $HOME/.mozilla/firefox" I checked the location of that places.sqlite file. It is located in the following sub directory: $HOME/.mozilla/firefox/<generic letters and numbers>.default-release/ Where the folder name "<generic letters and numbers>.default-release" is defined in the following file: $HOME/.mozilla/firefox/installs.ini I think the information about the location of the places.sqlite file is outdated in the Bookmark Import Wizard and should get corrected there. SOFTWARE/OS VERSIONS Linux: Tuxedo OS 3 KDE Plasma Version: 6.1.5 KDE Frameworks Version (kf6-frameworkintegration): 6.5.0 Qt Version: 6.7.2