Free · Runs on your device · No signup

Stamp PDF

Add preset or custom visible stamps to selected PDF pages locally, then inspect the actual generated PDF.

PDF bytes, stamp text, drawings, and coordinates stay in this browser tab and are never stored.
Add a PDF sourceOne PDF · 100 MB and 300 page safety limitsChoose from your device or drag and drop a file here.

Choose a PDF to begin.

Why this tool is different

Place a clear approval, draft, confidential, final, reviewed, void, copy, or custom stamp on one or more pages without rasterizing the source.

Requirements and recommendations

How to stamp a PDF

  • Choose a PDF and select current, all, or specific pages.
  • Pick stamp text, color, opacity, rotation, size, and position.
  • Generate and review the actual reopened PDF before downloading.
How OpenFileTools processes it

Local processing, explicit choices.

The browser adds visible vector and text content to the selected pages, validates page geometry, and reopens the generated PDF in a fresh render session.

Frequently asked

Questions, answered.

Are stamps editable comments?

No. They are flattened visible PDF content.

Is the PDF uploaded?

No. The source, settings, and result stay in this browser tab.

Does stamping preserve searchable text?

Yes. Existing page text and vectors remain structural PDF content.