This makes browsing, installing and managing GNOME extensions a breeze (not a KDE joke btw). The new GNOME Extensions app finally adds some first-class extension management capabilities to GNOME but this is still the easiest way to deal with extensions. Thank you to the developer for creating and maintaining this.

Allows you to easily install, update and try out new extensions. Thank you!

Overall set up process of Gnome extensions is needlessly overcomplicated. However it works well after all steps and instructions.

Firefox 70.0.1. White page instead of list installed extensions