Timestamp PDF

Add an RFC 3161 document timestamp to your PDF using a trusted Time Stamp Authority (TSA) server. Proves your document existed at a specific point in time. No certificate required.

Internet connection required

Timestamping requires contacting the selected TSA server to obtain a trusted timestamp token.

Click to select a file or drag and drop

PDF Documents

Most file processing happens in this browser.

Practical guide

Timestamp PDF

Add an RFC 3161 document timestamp to your PDF using a trusted Time Stamp Authority (TSA) server. Proves your document existed at a specific point in time. No certificate required.

Guide updated August 2026

What this tool does

Timestamp PDF helps fill, create, sign, or validate interactive document elements.

Useful for

  • Complete a form without printing it.
  • Place a visible signature or field in a controlled position.
  • Check signature information before accepting a document.

A reliable workflow

  1. Choose the source file and confirm that it opens correctly before processing.
  2. Review the available options. Start with the defaults, then change only the setting that affects your intended result.
  3. Process the file, open the result, and verify page order, text, images, links, and forms before replacing your original.

Options available in this tool

Select a TSA server

How your document is handled

The document remains in your browser. Timestamp tools can send a cryptographic digest and technical connection data to the timestamp authority you select; they do not need the readable PDF contents.

Limits and compatibility

A drawn or typed signature is a visual mark and is not automatically a regulated digital signature. Certificate validation and legal effect depend on the certificate, signing method, jurisdiction, and receiving software.

If the result is not what you expected

If fields or signatures do not appear, check whether the PDF uses XFA or flattened content and verify the result in a second PDF viewer.