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Add a watermark to a PDF without uploading

Overlay your own text across every page.

Files stay on your device

Drop your PDF here, or click to choose

Files are processed on your device — nothing is uploaded.

Choose file

How to add a watermark to a PDF

  1. Drop the PDF you want to watermark — or click to choose it.
  2. Type your text and adjust the opacity, size, and angle.
  3. Click Process. Your watermarked PDF downloads instantly.

Your file never leaves your device — the watermark is applied entirely in your browser.

Frequently asked questions

Do I have to upload my PDF to watermark it?
No. The watermark is applied entirely in your browser — your file is processed locally and never leaves your device.
Can I change how the watermark looks?
Yes — set the text, opacity, size, and angle before processing.
Can I watermark confidential documents safely?
Yes. Since your file never leaves your device, stamping 'CONFIDENTIAL' on sensitive documents stays completely private.
Is adding a watermark free?
Yes. It's completely free, with no account, no sign-up, and no watermarks added by us to your file.
Can I use an image as a watermark?
Not yet — this tool stamps text. Image watermarks are on the roadmap.