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Free PDF tool · Private by design

Add a watermark to PDF

Add a text label such as “Draft” or “Confidential” to a PDF you own or are authorized to edit. Fine-tune the look before you save a copy.

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    Choose a PDF file to get started
    🔒 Your PDF is processed on this device. PDFSathi does not upload your document.

    How to add a text watermark

    Choose your PDF, enter a short label, select where it should appear and adjust the opacity. The watermark is added to every page in the downloaded copy.

    Use watermarks responsibly

    Use this feature on documents you created, own or have permission to modify. A watermark does not encrypt or secure a PDF; it is a visible label and can sometimes be removed by editing software. Do not use it to misrepresent authorship or remove someone else’s attribution.

    Frequently asked questions

    Does the watermark affect the original file?

    No. The browser creates a separate watermarked copy, leaving your selected original unchanged.

    Can I use a logo image as a watermark?

    This version supports text watermarks. Keep the original file if you need a logo or image watermark workflow.

    Read our watermark guide →