Add watermarks, page numbers, and custom text to your PDFs.
PDF or drop files here
Privacy: everything runs in your browser — files never leave your device.
Our free watermark PDF tool allows you to add custom watermarks, page numbers, and text stamps to your PDF documents entirely in your browser. Unlike online services that upload your files to remote servers, this tool processes everything locally on your device, ensuring complete privacy and security. Whether you need to protect intellectual property, brand documents, or simply add page numbers for easy reference, our tool offers professional-grade watermarking with full customization options.
The tool supports both visible watermarks (text, logos, copyright notices) and functional additions like page numbers with multiple formatting styles. With precise positioning controls, opacity adjustments, rotation options, and custom text styling, you can create exactly the watermarked PDFs you need without any software installation or subscription fees.
Add page numbers to textbooks, study guides, and course materials for easy reference during lectures and exams.
Watermark proposals, invoices, and contracts with your company logo and "CONFIDENTIAL" stamps.
Add sequential page numbers and "DRAFT" watermarks to legal briefs and court documents before final submission.
Mark PDFs with your contact information or website URL when sending portfolios or marketing materials.
Currently, the tool processes one PDF at a time for privacy and performance. However, you can use our Merge PDF tool first to combine multiple files, then apply watermarks to the merged document.
No! Everything runs 100% in your browser using modern web technologies (PDF-lib and Canvas API). Your files never leave your device, making this tool perfect for confidential documents. You can even use it offline once the page loads.
The current version supports text-based watermarks with full customization (opacity, rotation, color, size). For image-based logos, consider using our PDF Editor tool which supports importing images onto PDF pages.
You can choose from: decimal (1, 2, 3), zero-padded (01, 001), lowercase Roman numerals (i, ii, iii), or uppercase Roman numerals (I, II, III). You can also add custom prefixes/suffixes like "Page 1 of 10" or "P-01".
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