Add Watermark — Free Online Tool
Use instantly, free, with no signup. Your files are processed locally and never uploaded.
By the AllFileBox Team · Last updated: 2026-06-21
Drop your file here or click to upload
Free: up to 10MB • Pro: 100MB • Business: 500MB
Add Watermark is a free online tool that stamps a text or image watermark over the pages of a PDF, helping you mark documents as draft, confidential, or your own.
Why watermark a PDF
A watermark signals ownership and status without changing the underlying content. Stamping CONFIDENTIAL, DRAFT, or a company name across each page deters unauthorized reuse and makes the document's purpose clear at a glance. It is a quick, professional way to protect work you share.
Text or image watermarks
You can add a text watermark with your own wording or upload a logo image. Position, opacity, and rotation are adjustable so the mark is visible without hiding the text beneath it. The watermark is applied to every page in one pass.
How To Use Add Watermark
- Open Add Watermark in your browser.
- Drop your PDF onto the upload area.
- Enter watermark text or upload a logo image.
- Adjust opacity, position, and rotation.
- Download the watermarked PDF.
Mark drafts
Mark drafts
Stamp DRAFT across a document so reviewers know it is not final.
Protect shared files
Add a CONFIDENTIAL or company watermark before sending a PDF externally.
Brand proposals
Overlay a faint logo on each page to brand a client proposal.
| Type | Best for | Adjustable |
|---|---|---|
| Text | Status labels | Opacity, angle |
| Image | Logos | Size, position |
| Tiled | Strong cover | Spacing |
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Key Features Add Watermark
Your Files Stay Private
All processing happens in your browser using WebAssembly. Your file is never sent to our servers. We have zero access to your files — guaranteed.