To the best of my knowledge, Firefox Sync does not sync pinned tabs. This is by design, since some users may not want the same set of pinned tabs on all of their devices.

On desktop each Firefox window can have its own set of pinned tabs, so it will be hard to keep pinned tabs separated and you could possibly end up with pinned tabs from all open windows from desktop in one window on anther Firefox for desktop or Firefox for mobile.

Firefox doesn't sync pinned tabs. However, you can send tab across device.

Appreciate the prompt replies.

I'd love to have synced pinned tabs, as well.

Since users can choose what to sync, it would be possible to add pinned tab sync and be able to disable it seperately (maybe even disable it by default).

Hi Ruben,

If you have other question, please start your own thread here. I'm going to lock this one since this has been solved.