feature request: thumbnails

[tidux]

A major usecase of syncthing-lite is to download individual files from remote shares on demand, such as for uploading to other apps. Thumbnail support would be a major quality of life improvement over other remote access protocols such as SFTP or SMB/CIFS.

[l-jonas]

Well, the server side does not support thumbnails (because it's for syncing). I could think of an additional file per directory for thumbnails which are generated at the server (the computer which shares the directory). Eventually as an extra application for the Server.

[l-jonas]

A few notes:

• images can be scaled and streamed to stdout using convert screenshot.png -resize 256x256 -
• due to https://docs.syncthing.net/specs/bep-v1.html#selection-of-block-size, the data in a preview image file should be aligned to 128 KiB blocks