You need to stamp "DRAFT", "CONFIDENTIAL", or your company name across every page of a PDF before sharing it. Doing this manually in a PDF editor takes minutes per document. A watermark tool should take seconds.
The Watermark PDF tool at Ultimate Tools adds a text watermark to every page of a PDF in your browser — no upload, no account, instant download.
How to Add a Watermark to a PDF
- Open the Watermark PDF tool
- Drop your PDF onto the upload area
- Type your watermark text
- Adjust opacity, position, and font size
- Click Apply Watermark and download
The watermarked PDF downloads immediately. Every page gets the watermark applied.
Watermark Options
| Setting | Options |
|---|---|
| Text | Any text — "DRAFT", "CONFIDENTIAL", your name, URL |
| Opacity | 10–100% — lower is subtler, higher is more prominent |
| Position | Center diagonal, top-left, top-right, bottom-left, bottom-right |
| Font size | Adjustable — larger text for emphasis, smaller for subtle marks |
| Color | Standard colors available |
Common Use Cases
Draft documents: Add "DRAFT" across all pages before sending for review. Remove the watermark once the document is finalized.
Confidential files: Stamp "CONFIDENTIAL" or "INTERNAL USE ONLY" before sharing documents that shouldn't be redistributed.
Proof copies: Designers and photographers use watermarks on proof PDFs to prevent unauthorized use before payment.
Branding: Add your company name or website URL to PDFs you distribute publicly — whitepapers, reports, guides.
Preventing reprinting: A prominent watermark discourages unauthorized copying or redistribution of printed materials.
How the Watermark Is Applied
The watermark is embedded directly into the PDF page content using pdf-lib. It is not a PDF annotation layer or overlay — it's drawn into the content stream, making it:
- Permanent — it cannot be removed by simply deleting an annotation layer
- Page-wide — every page gets the watermark, including pages added later if the PDF is merged
- Print-ready — the watermark prints exactly as it appears on screen
Privacy: Runs in Your Browser
The watermark is applied entirely in your browser using pdf-lib. Your PDF never leaves your device — it's read locally, modified in memory, and downloaded back to you.
This is important when the PDF contains:
- Legal or financial documents
- Client-facing materials before approval
- Anything with confidential content
Related PDF Tools
- Merge PDF — combine PDFs before watermarking
- Protect PDF — add a password to prevent opening
- Compress PDF — reduce file size after watermarking
- Remove PDF Pages — clean up pages before watermarking
Draft stamps, confidentiality marks, proof watermarks — open the Watermark PDF tool, type your text, adjust opacity, download.
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