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PDF Watermark
Add text and image watermarks to PDF. Supports single position and full screen. All operations are done locally.
Upload PDF
Upload PDF File
PDF format supported
Result
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Watermarked PDF will appear here
What is PDF Watermark?
Add semi-transparent text or images to PDF to identify document ownership, copyright, or confidentiality.
Core Benefits
- Quickly add watermarks to PDF
- Support text and image watermarks
- Support single and full screen
- Local processing, protect privacy
Features
- Custom text, color, opacity
- Rotation and font size adjustment
- All pages or specified range
- Preview watermarked results
Use Cases
- Add company logo or copyright
- Identify document confidentiality
- Prevent unauthorized use
- Add source identification
Technical Advantages
- High-quality rendering using Canvas
- Support multiple styles and positions
- Pure frontend processing
- Keeps original content clear
🚀 How to Use
- Upload PDF: Click or drag file.
- Set Watermark: Enter text, choose color, opacity, rotation.
- Select Range: Choose all pages or range.
- Start Add: Click "Execute".
- Preview & Download: Preview effect.
💡 FAQ
Will adding watermark affect document content?
No, watermark is semi-transparently overlaid, won't affect reading original document.
Can I add image watermarks?
Current version supports text watermarks. Image watermark feature is under development.