PDF Watermark
Add custom text watermarks to all pages of your PDF with adjustable opacity, angle, and font size.
Drop your files here to start PDF Watermark
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How to Use PDF Watermark
Protect confidential documents by stamping custom text watermarks (e.g. CONFIDENTIAL, DRAFT, DO NOT COPY) across your PDF pages. Customize font size, rotation angle (-90° to 90°), and opacity with instant preview and download.
Upload PDF
Select the PDF file you want to watermark.
Customize watermark
Enter your watermark text, adjust angle, opacity, and font size.
Download PDF
Save the watermarked PDF directly to your device.
Technical Specifications & Compatibility
Verified processing capabilities, memory limits, and format standards for PDF Watermark.
| Supported Input | |
|---|---|
| Output Format | Watermarked PDF |
| Execution | 100% Client-Side In-Browser (pdf-lib) |
| Privacy | Zero cloud uploads · No telemetry |
Practical Use Cases & Applications
Common real-world scenarios where PDF Watermark solves everyday file and workflow challenges.
Confidentiality Protection
Mark internal memos, pitch decks, and financial reports as CONFIDENTIAL.
Draft & Review Cycles
Mark document drafts with DRAFT or PRELIMINARY stamps before final approval.
Copyright Protection
Protect photography portfolios and proprietary whitepapers from unauthorized distribution.
Key Features & Capabilities
Local In-Browser Processing
Files and inputs for PDF Watermark are processed in your local browser memory and never uploaded to GodOfTools servers. Standard website analytics and usage cookies are handled separately per our Privacy Policy.
Frequently Asked Questions
Everything you need to know about using PDF Watermark securely and effectively.
Will watermarking alter the existing text in my PDF?
Are my files kept private?
Is PDF Watermark free to use?
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