Why add watermarks to your PDF documents?
Watermarking protects confidential materials, establishes draft status, and deters unauthorized copying by adding clear text across your document pages.
Quick Definition & Overview
A PDF watermark is a semi-transparent text stamp placed diagonally or horizontally across document pages to signal confidentiality, copyright, or draft status.
- Customizable text: CONFIDENTIAL, DRAFT, DO NOT COPY, or custom names
- Multi-angle support: 45° diagonal, 0° horizontal, or 90° vertical
- 100% free with automated 30-minute server cleanup
Input
PDF
Output
Watermarked PDF
Placement
All Pages
Cost
100% Free
How to Add a Watermark to PDF
- Upload PDF DocumentDrag & drop your PDF into the upload workspace or browse from your device.
- Configure Watermark Text & AngleType your watermark text, pick diagonal or horizontal angle, and choose a tone.
- Process & StampClick 'Process Add Watermark' to apply the watermark across all pages.
- Download Watermarked PDFDownload your newly protected document immediately.
Frequently Asked Questions
Can I customize the watermark text?
Yes. You can use standard presets (like CONFIDENTIAL, DRAFT, COPY) or type any custom company name or phrase you need.
Does watermarking degrade document quality?
No. Watermarks are rendered as crisp vector text streams without compressing or degrading the underlying PDF pages.
Are my uploaded files kept private?
Yes. Files are stored only temporarily in memory during conversion and automatically deleted after 30 minutes.
Can the watermark be removed after adding it?
The watermark is rendered as visual content embedded into the PDF pages, making it difficult to remove. It is not added as a separate removable layer, so standard layer-removal tools will not strip it.
Can I add an image watermark instead of text?
Currently the tool supports text watermarks with customizable font size, opacity, rotation angle, and color. Image watermark support is planned for a future update.