PDF Watermark Adder
100% PrivatePDF & Document ToolsStamp one line of text, like DRAFT or CONFIDENTIAL, across the pages of a PDF.
Runs entirely in your browser. Your input is not uploaded to Ovatly or anywhere else.
- 1Choose the PDF.
- 2Type the watermark text.
- 3Set the opacity, angle and text size.
- 4Press Add watermark and download the stamped PDF.
Choose a contract, type DRAFT, and keep the defaults of 45 degrees, 25 percent opacity and 48 pt. Every page gets one large diagonal DRAFT across its center, readable over the text but light enough that the contract stays easy to read and print.
- The stamp is one centered line per page; very long text may run past the edges of narrow pages, so shorter text works best.
- Watermark text uses a standard built-in font covering Latin letters, numbers and common punctuation; other scripts will produce an error message rather than a broken file.
- A watermark discourages casual misuse but is not security: someone with a PDF editor can remove stamped text. Use password protection when you truly need control.
It is ordinary page content, so a PDF editor can remove it. Keep your unwatermarked original, which this tool never modifies.
About this tool
PDF Watermark Adder stamps one line of text, such as DRAFT, CONFIDENTIAL or a company name, across the center of every page at an angle and transparency you control. It marks a document's status clearly before you share it, without flattening or re-rendering the pages.
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Part of Ovatly's free tools in PDF & Document Tools.