BUD-10: Thumbnails

[v0l]

Adding thumbnail endpoint

Implemented already in route96 for listing and deleting on https://nostr.download

v0l/route96@6763e53

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[hzrd149]

This feels like It could be a separate service, since hashes are universal. Something that a user could pick or a client could provide as an extra service

Blossom servers could implement this but I don't think it makes sense for all of them to, or even make it optional. because the user is going to only need a single thumbnail service, but they will be using multiple blossom servers

[doc-hex]

This is also implemented on https://24242.io/

[sondreb]

Having a thumbnail would be a great addition, on the "Media Library" in my Nostr app it would be nice to be able to get thumbnail from the user's primary Blossom server and not having to rely on yet another third party service for the thumbnail.

Rendering all photos a user has uploaded might be a lot to download when user has uploaded original photos that are not optimized.

[hzrd149]

I'm still unsure if blossom servers should be providing this service, but #101 may be a cleaner way for servers to link to the preview URL of a blob.
The only downside though is it does not define a standard path so clients would have to make a HEAD /<sha256> request for the headers or expect the /list/<pubkey> endpoint to return a thumb in the NIP-94 fields