Horodatage PDF
Injectez un horodatage sécurisé RFC 3161 dans vos documents PDF pour prouver leur date de création.
Télécharger le PDF pour l'horodatage TSA
À propos de cet outil
Timestamp PDF adds RFC 3161 compliant trusted timestamps to your PDF documents using external Time Stamping Authorities (TSA). It provides legally-binding mathematical proof that a document existed in a specific, unaltered state at a precise instant in time.
Select from global trusted TSA servers such as DigiCert, Sectigo, SSL.com, FreeTSA, or MeSign. No personal signing certificates are required to secure your documents against future tampering.
Supports fully secure local hashing before handshake, guaranteeing absolute document contents remain 100% confidential.
Practical guidance before you use Horodatage PDF
Best for real document workflows
Use Horodatage PDF when you need a quick browser-based result without creating an account or sending routine documents through an unnecessary upload workflow. Intellectual Property is a common example: Establish clear priority proof of patents, drafts, and ideas before public release.
Privacy and file handling
EasyPDFNex prioritizes local processing in your browser. That means supported PDF operations run on your device, not in a public cloud queue. For sensitive files, review the output before sharing it, close the browser tab after downloading, and avoid processing documents you are not authorized to edit.
Quality checks after processing
After you apply and timestamp, open the result and check page order, text readability, signatures, links, and form fields. If the source file is scanned, encrypted, very large, or damaged, try a related workflow such as sign pdf, encrypt pdf, sanitize pdf before repeating the task.
Start with a clean source file whenever possible. For Horodatage PDF, the first step is usually "Upload PDF Document": Select the target PDF file you want to timestamp. This simple preparation step prevents most failed exports, missing pages, and formatting surprises.
Editorial review note
This guidance is maintained by the EasyPDFNex editorial team and reviewed for practical PDF workflow accuracy. Tool pages are written to explain when a feature is useful, what to check before download, and where browser-based processing has limits.
Comment utiliser
Upload PDF Document
Select the target PDF file you want to timestamp.
Select TSA Server
Choose a trusted global Time Stamping Authority from the list.
Apply and Timestamp
Click Timestamp to fetch secure response from TSA and embed the token.
Cas d'utilisation
Intellectual Property
Establish clear priority proof of patents, drafts, and ideas before public release.
Financial Auditing
Provide certified tamper-proof logging of ledger archives and balance reports.
Legal Contracts
Lock legal agreements with a trusted time proof to avoid backdating arguments.
Questions fréquemment posées
What is a trusted timestamp (RFC 3161)?
An RFC 3161 timestamp is a cryptographically signed token issued by a recognized third-party authority (TSA) that links a document hash to a specific, verified clock source.
Do I need a digital certificate?
No, the cryptographic signature is provided directly by the trusted TSA server, making the process effortless for document owners.
Does the TSA see my document contents?
Never. The tool only sends a secure SHA-256 hash of your document to the TSA server, keeping your actual document completely private.