Practical guides

Guides to verify your documents

Practical methods, backed by official sources, to check a document, organize your verifications and fight document fraud.

Verify document authenticity

Issuer, content, file, signatures: a general method for checking any document.

Properties, dates, versions, signature: what a PDF reveals about its history, and the limits.

Visible signs, C2PA marks, cross-checks: how to spot a fake made with AI.

Allowed documents, official checks, telling inconsistencies: a method for reviewing rental files.

Types of forgery, penalties under French law, exposed sectors and how to organize your controls.

A criteria grid and the questions to ask a vendor, from the free trial to the contract.

The French signed barcode: which documents, which readers, and what it proves or not.

Free trial

Upload a PDF, scan or photo and get a verdict within seconds.