Add a watermark to a PDF
Stamp a text watermark on every page of a PDF — for example «CONFIDENTIAL» or «DRAFT» — diagonal and semi-transparent. Everything happens in your browser.
💧 Tap here or drop a PDF
One PDF file
🔒 Fully private: the PDF is processed on your device, never uploaded.
What a watermark is for
A watermark is text overlaid on the content, useful to mark a document as a draft, confidential or copy, to discourage its distribution, or to put your name on a piece of work before sharing it. Being semi-transparent and diagonal, it stays readable without covering the text underneath.
Tip
Keep the intensity low (around 20%) so it doesn't get in the way of reading. A bright color like red makes the text clearly visible; grey is more discreet and suits formal documents.