SunPDF

Watermark PDF online

Add a visible label, status, or logo to selected pages to identify a copy and its intended use.

or drop the file herePDF · Up to 50 MB per file

Your PDF stays on your device. It is not sent to any server.

How it works

  1. Choose a file
  2. Preview
  3. Download

What you can do

  • Text / Image
  • Opacity
  • Rotation

See the tool in action

Watermark PDF, SunPDF
Real SunPDF screenshot for “Watermark PDF”, created with a fictional practice document containing no personal data.

Try the example

Fictional file created by SunPDF with no personal data.

Add DRAFT at 25% opacity and −45° to all three pages. Check that every heading remains readable.

What does this PDF tool do?

Choose text or an image, then adjust position, opacity, rotation, and target pages with a preview before applying it. The watermark becomes part of the exported copy. Its occurrences can still be reviewed or changed during the session.

Document processing happens in your browser. SunPDF does not upload your PDF to a server for editing. Closing or refreshing the tab ends the current session.

When to use this tool

A subtle Draft or Confidential label can cover every page, while an opaque logo needs a position that does not hide text.

How to check the result

Review targeted and untargeted pages, check contrast and readability, and make sure no information was unintentionally obscured.

Continue with another tool

Sign a PDFAdd text to a PDFAdd an image to a PDFEdit a PDF

Guides for this tool

Follow the steps and checks to make before saving your document.