Analyze your PDF documents in seconds and detect any trace of modification.
Your document is processed temporarily, for the duration of the analysis, and is not retained. Only the file hash and company identifiers (SIRET, VAT) may be sent to verification APIs. PDF only, up to 10 MB and 20 pages.
Guides: How to spot a tampered invoice · How to verify a proof of address · How to tell if a PDF was modified · 2D-Doc: verifying French official documents · How to verify a pay slip · How to spot a fake IBAN on an invoice · Supplier bank-detail change fraud: verifying a new IBAN · How to verify a Kbis extract (French company registration) · How to verify a French tax notice (avis d'imposition) · How to verify an URSSAF vigilance certificate (France)
Free tools: IBAN checker: validate the check digits and the length · SIRET checker: Luhn check digit and the La Poste rule · SIREN checker: Luhn check and matching French VAT number · French VAT number checker: key and SIREN consistency · French social security number (NIR) key checker
Only the file hash and company identifiers may be sent to external APIs (VirusTotal, INSEE, EU DSS) for document verification.