Add a watermark to a PDF in seconds. Mark it confidential, draft, or your own text.
Type the mark. It is drawn across every page.
or drop files here
Fast
Runs in this tab. No queue, no wait for an upload.
Secure and protected
Free users: files stay in the browser and are gone when the tab closes.
Formats
Need this in your workspace? The same Watermark PDF tool is available through the API, CLI, and MCP. Browser use stays free. See Pro.
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