What is the Watermark PDF tool?
Watermark PDF overlays a custom diagonal text stamp on every page of your document — perfect for marking drafts as DRAFT, sensitive files as CONFIDENTIAL, leak-trackable copies with a recipient name, or simply branding handouts with your company.
The watermark is a real PDF text layer, not a flattened image, so the rest of the document stays searchable and selectable. You control the text, font, colour, opacity, angle and size before you commit.
How to add a watermark to a PDF
- Drop your PDF onto the page or click 'Choose files'.
- Type the watermark text, then use the options panel to set the font, colour, opacity, angle and size until the live preview looks right.
- Click 'Convert & download' to get a stamped PDF with the watermark on every page.
Why use our Watermark PDF tool?
- Full control over text, font, colour, opacity, angle and size — not just a fixed CONFIDENTIAL stamp.
- Live preview so you can iterate without re-uploading the file each time.
- Watermark is added as text, so the rest of the document remains searchable.
- Works on multi-page PDFs of any orientation, stamping each page consistently.
Frequently Asked Questions
Can I use an image as a watermark?
This tool is text-only. To stamp an image such as a logo or signature, use our Sign PDF tool which accepts a PNG with transparency.
Will the watermark appear on every page?
Yes — the stamp is applied to every page using the same settings. Split the PDF first if you only want to watermark a subset.
Can the watermark be removed by someone who receives the PDF?
It can be edited out with a paid PDF editor. Use Watermark PDF to discourage casual sharing, not as a security control. For genuine access control, use a password.