Watermark PDF
Add custom text watermarks to your PDF — choose text, opacity, rotation, and position.
About About the Watermark PDF Tool
About the Watermark PDF Tool
Our free online PDF watermark tool lets you add custom text watermarks to protect your documents and assert ownership. Whether you need to mark documents as "Confidential", "Draft", "Sample", or "For Review Only", this tool gives you complete control over the watermark appearance — including text, opacity, rotation, font size, color, and placement.
Choose from multiple positioning options: diagonal across the page for a traditional watermark look, centered for prominent display, or top/bottom for subtle marking. Adjust the opacity from 10% to 60% to achieve the perfect balance between visibility and subtlety. Select font size from small to huge, and choose any color using the color picker. The watermark is rendered directly onto each page of your PDF using PDF.js and jsPDF. All processing happens in your browser with complete privacy.
Why watermark PDFs? Watermarks protect your intellectual property by discouraging unauthorized use and clearly identifying document status. Legal professionals watermark documents with "Confidential" or "Attorney-Client Privilege". Photographers and designers watermark their portfolios to prevent unauthorized use. Businesses mark drafts and proposals with review status to prevent premature distribution. Watermarks are also essential for protecting sensitive documents shared with external parties.
How to Watermark a PDF
- Upload your PDF — Click the upload area and select the PDF you want to watermark.
- Customize the watermark — Enter your watermark text, choose opacity, position, font size, and color.
- Preview settings — Adjust each option until you are satisfied with the watermark appearance.
- Download the watermarked PDF — Click Add Watermark and download your protected document.
Who Needs PDF Watermarking
- Confidential documents — Mark internal documents, legal papers, and financial reports as confidential before sharing.
- Draft marking — Clearly label draft versions of documents to avoid confusion with final versions.
- Portfolio protection — Add watermarks to design portfolios and photography samples shared with potential clients.
- Document status — Mark documents with their review status like "Approved", "Pending Review", or "Expired".
Frequently Asked Questions
The watermark is rendered directly into the PDF pages as an image, making it very difficult to remove without specialized software. It provides strong visual protection for your documents.
Currently, the watermark is applied to every page in the document. This ensures consistent protection across all pages.
Yes. All processing happens in your browser. Your document never leaves your device and is never uploaded to any server.
30% opacity is recommended for most documents — it is visible enough to protect your content without making the document hard to read.
Add Watermark
100% privateUpload a PDF to watermark
Your file stays on your device.
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