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Add Watermark to PDF — Free

Stamp any text as a watermark across every page of your PDF. Customize the text, font size, color, opacity, and angle. Perfect for marking drafts, confidential documents, and branded reports.

✓ Custom text & color✓ Adjustable opacity✓ Diagonal or horizontal✓ No signup

How to Add a Watermark to a PDF

  1. 1
    Upload your PDF

    Click "Choose File" or drag and drop a PDF up to 100 MB.

  2. 2
    Enter watermark text

    Type the text you want to stamp — e.g. "CONFIDENTIAL", "DRAFT", or your company name.

  3. 3
    Customize style

    Set the font size, opacity (transparency), and rotation angle.

  4. 4
    Apply & download

    Click Apply Watermark and download the stamped PDF instantly.

Frequently Asked Questions

Can I watermark every page?

Yes. The watermark is applied to all pages automatically.

Can I make the watermark semi-transparent?

Yes. Use the opacity slider to set any transparency from 10% to 100%.

Will the watermark be editable in the output PDF?

No. The watermark is embedded as a visual layer and cannot be removed by simply editing the PDF.

Is there a page limit?

No page limit — watermarks are applied to the full document regardless of length.