Browsers - Bookmarks - Firefox

To export Firefox bookmarks, click the hamburger icon in the top right corner and select Bookmarks.

Then, select Manage bookmarks at the bottom.

In the popup window, click Import and Backup then select Export Bookmarks to HTML…

Select a location to save the bookmarks file to. I use a folder I created in I:\Shared\.

To import bookmarks, follow the same steps, choosing Import Bookmarks from HTML… instead.