Add a watermark to PDF online

Overlay a semi-transparent diagonal watermark across all pages in a PDF.

You’ll need
PDF
80 MB max
You’ll get
PDF
How long
Under 20s

Need to mark a draft agreement, confidential presentation, or proof copy? This page adds a clean diagonal watermark to your PDF across every page in seconds.

How to watermark a PDF

  1. Upload your PDF document.
  2. Enter your watermark text or select a preset (e.g., CONFIDENTIAL, DRAFT).
  3. Press Convert file and download the watermarked PDF.

What you get

A protected .pdf document with a clean, semi-transparent diagonal watermark across every page.

When this helps

  • Sharing unreleased financial statements or board materials
  • Marking early draft contracts prior to legal review
  • Protecting sample design mockups or client proposals

Common questions