Stamp PDF

How to use Stamp PDF

1. Open Stamp PDF — no sign-up or software download is required.
2. Drag and drop your file(s) into the tool, or click to browse and select them from your device.
3. Choose any options you need, such as order, quality, page range or output format.
4. Click the action button and let the tool process everything locally in your browser.
5. Download the finished file. Your originals are never changed or uploaded.

Why use Stamp PDF?

• 100% free with no limits, no sign-up and no watermarks.
• Private by design — your files are processed in your browser and never uploaded to a server.
• Fast and lightweight, with instant results even on a phone or a slow connection.
• Works everywhere — any modern browser on Windows, macOS, Linux, Android or iOS.
• Part of a full pdf tools suite, so related stamp pdf tasks are one click away.

What people use Stamp PDF for

• Marking a document DRAFT so an early version is not mistaken for final.
• Adding an APPROVED or PAID stamp to a processed document.
• Marking a copy CONFIDENTIAL before circulating it.

Stamp PDF: limits and things worth knowing

• The stamp is drawn into the page content, so it prints and survives copying — unlike a reader annotation, which some viewers will not print.
• A DRAFT stamp is a label, not a control. To actually restrict what someone can do with the file, use PDF Permissions or encryption.
• Position matters on dense pages, since the stamp overlays existing content without moving it.

Is it private and secure?

Your privacy is built in. Stamp PDF does all processing on your own device using client-side code, so your files are never transmitted, stored or seen by anyone — including us.

Network activity: none. Nothing is sent and nothing is fetched. This tool makes no network request at all once the page has loaded — which is why it keeps working if your connection drops.

You do not have to take that on trust — our privacy proof page publishes the Content-Security-Policy that enforces it, lists every third party it permits, and shows how to verify the whole claim yourself.

We also measured the competition. Our PDF upload audit recorded how many bytes each of 20 online PDF tools actually transmits: 12 of the 13 measurable services uploaded the whole test file, and Filevane transmitted 0.00 MB.

Learn more

Do Free Online PDF Tools Upload Your Files? How to Check — Most online PDF tools upload your file to a server. How to tell which ones do, why it matters, and how to check any tool yourself in 30 seconds.