Add a Watermark to a PDF Online Free
Add a CONFIDENTIAL or DRAFT stamp, a company logo, or a signature to a PDF privately. Tile it across the page or place it in one spot.
PDF Watermark
Add text or image watermarks to PDF documents
Drop a PDF file here or click to browse
Supports PDF files up to 50 MB
Tips
- Use "Tile" position for maximum coverage - ideal for legal and confidential documents
- Lower opacity (10-20%) keeps content readable while the watermark stays visible
- Diagonal rotation (-45 degrees) is the industry standard for document watermarks
- Switch to Image mode to add your company logo, signature, or custom stamp
- PNG images with transparency work best for logo watermarks
- All processing happens in your browser - your PDF never leaves your device
Quick Start
- 1Upload your PDF by dragging it in
- 2Choose text mode or upload a logo image
- 3Adjust opacity, rotation, and position
- 4Pick which pages to stamp and download the result
More Convert Tools
All converters →Convert JSON to CSV Online
Paste JSON data and instantly convert it to CSV format. Free online JSON to CSV converter with download support.
Convert JSON to YAML Online
Paste JSON and instantly get YAML output. Free online JSON to YAML converter with syntax highlighting and copy support.
Convert YAML to JSON Online
Paste YAML and instantly convert it to JSON. Free online YAML to JSON converter with validation and formatting.
Convert JSON to TypeScript Types Online
Generate TypeScript interfaces and types from JSON data automatically. Free online JSON to TypeScript converter.
Convert HTML to Markdown Online
Paste HTML and convert it to clean Markdown. Free online HTML to Markdown converter preserving links, images, and formatting.
Convert Tailwind CSS to Plain CSS Online
Paste Tailwind utility classes and get equivalent plain CSS. Free online Tailwind to CSS converter for quick reference.
Looking for FAQs and advanced options? Visit the full PDF Watermark page →