How to export+import Bookmarks/favorites Dolphin to/from Firefox?

[Peter Steiner]

I would like to export current bookmarks/favorites from Dolphin and import them in Firefox browser resp. vice versa.

I DON'T want to use remote cloud storage for synchronization but use good old file transfer

How can I do this?

I found no export/import function

The transfer file format could be e.g. *.json


Peter