Install
Add the Umbra plugin to Obsidian on every device — desktop and mobile.
End-to-end encrypted Obsidian sync
Umbra stores your vault as ciphertext we can't open. Not your notes, not their titles, not their folders — not even we can read them.
1 GB free · unlimited devices · zero-knowledge
what your server sees: opaque bytes
Add the Umbra plugin to Obsidian on every device — desktop and mobile.
Your passphrase derives a key that never leaves your device. We only ever receive ciphertext.
Edits flow between your devices in the background. Conflicts keep both versions — nothing is lost.
The server sees
Only you see