About the Watermark PDF
Watermarks exist to stop a document being mistaken for something it is not. A draft contract circulating without a DRAFT stamp can be relied on as final. An internal analysis without a CONFIDENTIAL mark loses the visible signal that governs how it should be handled if it is forwarded or printed.
This tool stamps text across every page of the document, and applies it in your browser so nothing is uploaded. Because the mark is written into the file itself, it survives forwarding, printing and re-saving — unlike a note in an email body, which disappears the moment the attachment is detached.
It's part of the PDF collection on Toolzy, a growing platform of 135+ free, privacy-first tools built for speed and a great experience on every device.
Also known as: stamp, watermark, brand, overlay.
Why use the Watermark PDF?
- No watermarks on your output
- Handles multi-page and large PDFs
- Keeps your original formatting and quality
- Works on Windows, Mac, Linux, Android and iPhone
When to use it
- Preparing documents for email or printing
- Combining scanned pages or invoices
- Reducing file size to meet upload limits
How to use the Watermark PDF
- Open the Watermark PDF. Open the Watermark PDF on this page, there is nothing to install and no account needed.
- Add your input. Add your file by clicking the upload area or dragging it in. It is read on your device, not uploaded.
- Adjust options. Choose any options you need, the Watermark PDF updates instantly.
- Get your result. Click the action button to download or copy your result. It is 100% free.