This would be really welcome. Obsidian and Bear have this for note taking, and it's great

Like labels in GMail; they can be nested (and boy I use that feature a lot!)

This tagging methodology is well expanded and explained in this video I found a while back: https://www.youtube.com/watch?v=wTQeMkYRMcw

this would be super useful !

more than 6 years and they still haven't added this

This would be a killer feature for me. I've got ~16K bookmarks with ~1500 tags. It's pretty obvious that some are parent-child pairs, others are synonyms ("envy","desire").

Still nothing ? It's 2025 goddamnit

Would appreciate this for one of my use cases.

I bookmark a lot of instagram posts with places I want to visit. I'd like to create a hierarcy of places:

Places:

-Spain

--Malaga

-Italy

--Rome

--Florence

I thought I could do this with Collections but then I lose all the power of the tag. If there's a video with Top 10 Places to Scuba Dive. It's could contain 10 different countries. Which Collection does this go it?

I think for organisation as well, it would help to keep the tags themselves grouped.

Yes please

We already love tags, they allow us to organize items into all the potential contexts, or however tags are used

Nested tags would allow us to organize this organization system better, into context hierarchy, or however one prefers

This would help with finding relevant items, but also keep a neat looking sidebar

Bear, the notes app, is an example of this method: https://bear.app/faq/nested-tags/