The Add Watermark to PDF tool stamps custom text across each page of your document. Set the text, size, opacity, angle and color, then download a watermarked PDF — processed locally so your file stays private.
Brand or protect every page
Type your watermark text — like DRAFT or CONFIDENTIAL — and it's drawn diagonally and centered on every page using pdf-lib. Adjust size, opacity, angle and color to get exactly the look you want.
Because the watermark is applied in your browser, the original PDF is never uploaded.
Common uses
- Marking documents as draft or confidential
- Adding ownership or copyright text
- Branding shared PDFs
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