Security
Watermark PDF
Add text or image watermarks with position, opacity, and rotation controls.
- 1Upload PDF
- 2Configure watermark
- 3Download
Upload PDF to watermark
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Before you send it
Compress large signed files or protect a draft that should not be forwarded.
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Guide
Why watermark PDFs
Watermarking injects Form XObjects or artifact-marked content streams into the page paint order with explicit opacity — not a screenshot sticker.
Text and image stamps
CONFIDENTIAL typography or brand PNGs with alpha channels.
Opacity control
Balance underlying text legibility against stamp visibility.
Position and angle
Diagonal drafts or footer stamps on every sheet.
watermark PDFs use cases
- Mark draft contracts before client review.
- Brand portfolio PDFs before email forwarding.
- Stamp SAMPLE on training materials.
- Add copyright lines to design proofs.
FAQ
watermark PDFs — frequently asked questions
Can recipients remove watermarks?
Casual viewers cannot easily remove embedded stamps; determined editors with PDF tools might. Watermarks deter misuse; they are not DRM.
Image watermark formats?
PNG with transparency works best.
Does watermarking increase size?
Modestly for text stamps; image stamps add the XObject bytes.
Print visibility?
Opacity settings affect print the same as screen — test a proof page first.
Watermark vs protect?
Watermarks are visual. Use protect-pdf to encrypt with a password.
Flatten watermarks?
Export preserves interactive stamps until you flatten for archival.