Finally coaxed Firefox into recognising this! Works quite nicely so far! I like the ability to create sub-folders, so I can really organise my bookmarks according to how I use them!

It's nice that there are generic graphics per folder, though I'd prefer that the folders showed thumbnails from the pages they contain

No funciona. No aparece ninguna opción.

zero

I can't do anything in Firefox 63... It seem like bugged...

error

Не работает нормально.