Universal DocumentOpen document infrastructure
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Intent first

What are you trying to do with a document?

You do not need to understand schemas, hashes, software kits or the whole UD ecosystem. Choose the job.

MAKE SOMETHING

Create

Start a living Universal Document and keep it revisable until you choose a final state.

Create

ALREADY HAVE A FILE

Convert

Bring a PDF, Word file, spreadsheet, image, Markdown or text file and create a UD version.

Convert

SOMEONE SENT A UD

Open

Open browser-ready UD files normally, or use the free Reader for raw UDR and UDS files.

Open

CHECK INTEGRITY

Verify

Check available integrity evidence and keep identity, time and authority claims separate.

Verify

COMPARE STATES

What changed?

Understand UDR, UDS, revision relationships and why exact state matters.

Compare

ASK SOMEONE ELSE

Request UD

Use one simple sentence to ask for UDR while a document is changing or UDS when it is final.

Request UD

The only format rule most people need

UDR while the document is changing. UDS when the exact selected state matters. Send a browser-ready version so the recipient can read it without installing software.

For software builders

Use the open implementation profile, schema, test vectors, compatibility runner, algorithms and reference implementation.

Developer materials