Plasma Intergrations

«Multitask efficiently by controlling browser functions from the desktop, even while Firefox is in the background. Manage audio and video playback, check downloads in the notification area, send files to your phone using KDE Connect and more inside the KDE Plasma Desktop!

The plasma-browser-integration package must be installed for this extension to work. It will be available from your distribution's package manager.»

Я использовал (пока сидел на ФФ) для запуска ютуб-роликов с телефона.