Skip to main content

Timestamp PDF

Add RFC 3161 trusted timestamps to PDF documents. Prove document existence at a specific point in time without certificates.

Upload PDF for TSA Timestamp
Drag & drop PDF here. Fully supports encrypted PDFs with automated local decryption.

How to Use

  1. Upload PDF Document

    Select the target PDF file you want to timestamp.

  2. Select TSA Server

    Choose a trusted global Time Stamping Authority from the list.

  3. Apply and Timestamp

    Click Timestamp to fetch secure response from TSA and embed the token.

About This Tool

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.

Use Cases

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.