PDF Guide
How to Add a Confidential Watermark to PDF — Instant
Stamp a diagonal Confidential or Draft watermark on any PDF in seconds. Step-by-step guide using PDFMarkr's browser tool — no software installs or uploads needed.
Protecting Sensitive Information
Whether you're sharing a draft, a confidential contract, or an internal report, adding a watermark is a critical security step. Our tool lets you stamp text across every page without ever uploading the file to a server.
Choosing the Right Text
Common watermarks include "CONFIDENTIAL", "DRAFT", "INTERNAL USE", or even your company's name. You can customize the transparency so the watermark is visible but doesn't obscure the content.
How to Apply Your Watermark
- Select your PDF file.
- Type your desired watermark text (e.g., "CONFIDENTIAL").
- Adjust the opacity and rotation for better visibility.
- Download your secured PDF instantly.
Ready to try it?
Use our free, private, and local Watermark PDF tool right now.