UD Living Document
Create version-tracked .udr documents that evolve over time. Export the full revision history as a .udr, or seal any version as an immutable .uds snapshot.
Free · 3/monthContinue an existing .udr document
Load a previously saved .udr to resume editing
Document Details
Document Content
How UD Living Document differs from Google Docs version history
.udr is a portable open format
Your living document is a JSON file you own. No Google account, no cloud dependency — open and edit it anywhere.
Seal any version as immutable proof
Any version can be exported as a .uds snapshot with SHA-256 hash. That snapshot is cryptographically frozen — it cannot be silently altered.
Version hashes recorded in history
Each saved version records its own SHA-256 in the revision log. The progression of hashes proves the chain of changes.
Works offline, runs in browser
No server. No upload. Document editing and version saving happen entirely in your browser with zero data leaving your device.
No ads. No investors. No agenda.