Add Custom Watermarks to PDFs for Free (Client-Side)
Protect your documents by adding text watermarks to your PDFs online. Customize opacity, rotation, and color locally in your browser.
Protecting Your Intellectual Property
Stamping a watermark like "CONFIDENTIAL", "DRAFT", or your company name on a document prevents unauthorized use and establishes clear ownership. But you shouldn't have to upload your proprietary files or unreleased manuscripts to a third-party server just to add a simple text overlay.
Add Watermarks Privately
ToolClub's Add Watermark Tool allows you to specify custom text, adjust opacity, and set the perfect rotation angle. The watermark is applied across all pages simultaneously using local WebAssembly, guaranteeing your file's privacy.
Key Pros & Features
- Zero Uploads: Your intellectual property never leaves your device.
- Full Customization: Choose any color, scale the text to fit the page diagonally, and drop the opacity to create a subtle, professional stamp.
- Live Preview: See exactly how the watermark will look on your document before applying it to all pages.
- No File Limits: Watermark a massive 500-page manuscript in seconds without premium caps.
How to Use the Watermark Editor
- Load Document: Select your target PDF.
- Type Watermark: Enter the text you want (e.g., "DO NOT COPY").
- Style It: Use the sliders to adjust the size, rotate it (typically 45 degrees), and set opacity to 20-30%.
- Download: Click apply and your permanently stamped PDF will be saved instantly.
Best Use Cases
Essential for authors sharing unreleased scripts, businesses distributing confidential financial forecasts, and photographers/designers sending proof concepts to clients.