---
title: "PDF Watermark"
description: "Stamp CONFIDENTIAL, DRAFT or your own text across the pages of a PDF. Set the opacity, angle and colour. Runs in your browser — the file is never uploaded."
url: https://findutils.com/pdf/pdf-watermark/
category: pdf
---

# PDF Watermark

Stamp CONFIDENTIAL, DRAFT or your own text across the pages of a PDF. Set the opacity, angle and colour. Runs in your browser — the file is never uploaded.

**Use this tool:** [PDF Watermark](https://findutils.com/pdf/pdf-watermark/)

## Programmatic access

- REST id `pdf-watermark`: POST https://api.findutils.com/api/tools/pdf-watermark/execute (reference: https://findutils.com/api/pdf-watermark/)
- MCP tool `pdf_watermark` on https://mcp.findutils.com (reference: https://findutils.com/mcp/pdf-watermark/)

## Why Use Our PDF Watermark Tool?

Marking a document DRAFT or CONFIDENTIAL before it leaves your hands is a small job that usually needs a large program. The alternative most people reach for is a website that wants the document uploaded first, which is an odd thing to do with a file you are about to label confidential. This page draws the text over every page in your browser and gives the file straight back.

## Frequently Asked Questions

### Is my PDF uploaded?

No. The file is read and rewritten in your browser. Nothing is sent to a server.

### Does a watermark protect my document?

No, and it is important to be clear about that. It is a visual label. The original content is untouched underneath and anyone can remove the mark with a tool like this one. Use it to signal handling, never to prevent copying.

### Can I watermark only some pages?

Yes. Put page numbers and ranges in the Pages field, such as 1,3,5-8. Leave it empty and every page is stamped.

### What opacity should I use?

Around 0.15 is the usual choice: clearly visible, and still light enough to read the page through. Raise it for a mark that must not be missed, lower it for a subtle one.

### Will the text underneath still be selectable?

Yes. The watermark is drawn on top and changes nothing beneath it, so text stays selectable and searchable.

### Can I use an image instead of text?

Not yet — this page draws text. For a logo or a signature image, PDF Editor has an image stamp.

### What does the angle do?

It rotates the text. The default 45 degrees runs it diagonally across the page, which reads clearly and is harder to crop away than a horizontal line.

### Does it work on a scanned PDF?

Yes. A scan is a page with an image on it, and the watermark is drawn over that image the same way.

### Can I remove a watermark I added?

Not with this page. Keep the original file — the watermarked copy is a new document, and the original is unchanged on your disk.

### Can I use this from a script or an AI client?

Yes. The same stamper is available over HTTP and to MCP clients, so an agent can watermark a document without opening this page.

## Related Tools

- [PDF Editor](https://findutils.com/pdf/pdf-editor/)
- [PDF Page Numbers](https://findutils.com/pdf/pdf-page-numbers/)
- [PDF Merger](https://findutils.com/pdf/pdf-merger/)
- [PDF Organize](https://findutils.com/pdf/pdf-organize/)
- [Images to PDF](https://findutils.com/pdf/images-to-pdf/)
- [PDF Compress](https://findutils.com/pdf/pdf-compress/)
- [PDF Split](https://findutils.com/pdf/pdf-split/)
- [PDF Rotate](https://findutils.com/pdf/pdf-rotate/)