Watermark PDF
Add text or image/signature watermarks across pages.
Leave empty if you only want to use an image/signature.
PNG with transparency recommended for signatures.
Drop here to add
GuideHow to Watermark, Protect and Unlock PDF Files
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Use watermarks and supported PDF passwords appropriately and understand their practical limitations.
Frequently asked questions
Is the watermark permanent?
Yes, it becomes part of each page.
Can I use a signature image?
Yes, upload a PNG/JPG signature; PNG with transparency looks best.
What opacity should I use?
0.1–0.2 is common for readability.
What does the Watermark PDF do?
Add configurable watermark text or an image to PDF pages and download the marked document.
How should I interpret a Watermark PDF result?
Read the displayed labels and validation messages together, then verify important findings against the original source. The result is a practical aid, not proof beyond the data it can inspect.
What can affect the Watermark PDF result?
Inputs, source data, network conditions, and the limits explained on the page can affect the result.
Where can I learn more about using the Watermark PDF?
Read “How to Watermark, Protect and Unlock PDF Files” for a practical workflow, limitations, and checks to make after using the tool.