PDF Watermark
Add text watermark
Last updated:PDF watermarking writes a text watermark — your choice of font size, opacity, rotation, and color (gray, red, or blue) — across the centre of every page. LlamaPDF renders the watermark via pdf-lib without rasterizing the underlying content, so the original text remains selectable. All processing is browser-local.
Drag & drop your file here
or click to choose
Max 50 MB · No registration needed
Your file stays on your device — never uploaded
How to add a watermark to a PDF
- 1
Upload the PDF you want to watermark by dragging it into the box above or clicking to browse your files.
- 2
Enter your watermark text (e.g., 'CONFIDENTIAL', 'DRAFT', or your company name) or upload a logo image. Adjust the font size, color, opacity, rotation angle, and position to get the look you want.
- 3
Click Apply and download your watermarked PDF. The watermark is applied entirely in your browser — your document never leaves your device.
Why use our PDF watermark tool?
Watermarking is a practical way to assert ownership, indicate document status, or discourage unauthorized redistribution of your documents. Marking a draft report as 'DRAFT' prevents outdated versions from being mistaken for final copies. Stamping your company logo across client deliverables reinforces your brand on every page. Adding 'CONFIDENTIAL' to sensitive internal memos makes the access level immediately clear to anyone who opens the file. Our tool applies text or image watermarks to every page of your PDF with full control over placement, size, opacity, color, and rotation angle — all processed locally in your browser for maximum privacy. No software to install, no account to create, and the tool works on any device.
For stronger document security, combine watermarking with password protection to restrict who can open the file. You can also flatten the PDF afterward so the watermark becomes a permanent, unremovable part of the page content, or compress the result to keep the file size lean for email distribution. The tool is completely free with no limits on the number of pages.