Stamp every page with a diagonal or tiled text, with a live preview.
A watermark states what a document is meant for and discourages reuse: "Confidential" on an internal report, "Copy" on a receipt, or "For rental application only" on an ID sent to an agency.
| Setting | Advice |
|---|---|
| Text | Short and explicit, with the date or recipient for an ID document |
| Layout | Diagonal for a readable document, tiled to discourage cropping |
| Opacity | 15 to 30%: visible without getting in the way of reading |
| Colour | Red or dark grey depending on the background |
Before sending a copy of your passport or a proof of address, add a watermark such as "For rental application - Agency X - October 2026". If the document leaks, it cannot easily be reused for something else.
The watermark is built into the page: it stays visible when printed and in every PDF reader. Every script works, including Arabic, Cyrillic and Japanese.
It is merged into each page as an image: an ordinary PDF reader cannot remove it. A determined person with advanced editing software could cover it, but that leaves traces.
No. The watermark is applied in your browser: the PDF never leaves your device.
Yes. The watermark sits on top of the page: the original text stays selectable and search still works.