How to Add a Watermark to a PDF
A watermark — text like CONFIDENTIAL, DRAFT or a company name stamped across each page — signals the status or ownership of a document at a glance. Adding one is quick and free, and you don't need any desktop software.
Watermark a PDF privately
Our Add Watermark tool stamps diagonal, semi-transparent text across every page and runs entirely in your browser — your file is never uploaded. That's important for confidential documents.
Step-by-step
- Open the Add Watermark tool.
- Add your PDF.
- Type the watermark text (e.g. "CONFIDENTIAL").
- Click Add Watermark & Download.
Popular watermark uses
- CONFIDENTIAL / INTERNAL: mark sensitive files clearly.
- DRAFT: stop draft versions being mistaken for final.
- Your name or brand: claim ownership of shared documents.
Frequently asked questions
Does it cover every page? Yes — the watermark is applied to all pages.
Is it private? Yes — the file is watermarked in your browser and never uploaded.
Any watermark of the tool itself, or limits? No — only your text is added, free and unlimited.