PDF Watermark Tool
Add a text or image watermark to every page of your PDF with adjustable opacity, rotation, and position. Free, no login required, and processed entirely in your browser so your files never leave your device.
Drop your PDF here
or click to select a file
PDF files up to 50MB
How to Use
- Drag and drop your PDF file or click to select it from your device.
- Enter watermark text or upload a logo image, then set the color and size.
- Fine-tune the opacity, rotation, and position until it looks right.
- Apply the watermark to every page and download the finished PDF.
Frequently Asked Questions
Yes. Add text or image watermarks to as many PDFs as you want for free, with no page cap, no watermark from us on the output, and no account or payment needed. Every setting -- opacity, rotation, position, and tiling -- is available at no cost.
Yes. Your PDF is loaded and stamped entirely in your browser using pdf-lib. Nothing is ever uploaded to a server, so confidential documents and logos never leave your device -- ideal for sensitive or internal files.
Yes. Switch to Image mode and upload a PNG or JPG logo. PNG files with transparency work best because the transparent areas let your document show through. You can scale the logo, set its opacity, rotate it, and choose where it sits on the page.
Yes. The watermark is applied to all pages of the PDF at once. Choose the "Tile (repeat)" position to cover each page with a repeated diagonal pattern, or pick a single spot like center or a corner.
Yes. The opacity slider ranges from 5% to 100%. A lower opacity keeps your original content readable while still marking the document, which is useful for DRAFT, CONFIDENTIAL, or copyright stamps.