PDF Watermark
Add text watermarks to PDF files with customizable position, opacity, and size.
Add text watermarks to your PDF files. Customize position, opacity, and size.
Upload PDF File
Select a PDF file to add a watermark to all pages.
How to Use PDF Watermark
Watermark Text
Enter any text up to 50 characters. Common watermarks include "CONFIDENTIAL", "DRAFT", "COPY", or your company name.
Position
Choose where the watermark appears on each page. Center is most common for security watermarks, while corners work well for branding.
Opacity & Size
Adjust opacity to balance visibility and readability. Lower opacity (10-30%) is subtle, while higher opacity (70-100%) is more prominent. Font size affects how large the watermark appears.
Features:
- • Add text watermarks to all pages
- • 5 position options (center, corners)
- • Adjustable opacity (10-100%)
- • Customizable font size (12-96pt)
- • Live preview of watermark appearance
- • All processing done locally - your files never leave your device
- • Preserves PDF quality and formatting
About This Tool
This tool processes all data locally in your browser for maximum privacy and security. No data is sent to any server.