Add text or image watermarks to any PDF in seconds. PDF2Tool's watermark tool runs 100% in your browser using pdf-lib — your files never upload. Customise text, font size, colour, opacity, rotation, and position, or drop in a logo image. Tile across every page or apply to a single page.
Yes. Use the opacity slider to set any transparency level from fully visible to very subtle.
Yes. Select "Tile" positioning to repeat the watermark across the entire page surface.
No. Unlock the PDF first using our Unlock PDF tool, then add the watermark.
No. Watermark processing runs entirely in your browser using pdf-lib. Zero server uploads.
Yes. Choose "All pages" in the Apply To setting to watermark every page in one click.
Yes. Files are processed in your browser whenever possible, and any file uploaded for server-side conversion is automatically deleted within 30 minutes. We never share, sell, or read your documents.