Sync and selective sync

Each synced folder is split into content-defined chunks between 4 KB and 64 MB. When a file changes, only the affected chunks are re-uploaded.

Selective sync

On devices with limited disk space, mark folders as online-only. They appear in the file manager and are downloaded on first open.

Conflicts

If the same file is edited on two devices while offline, both versions are kept and the newer one gets a (conflict from DEVICE) suffix.