Watermark PDF

Stamp text or image watermarks across your PDF.

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Drag and drop files here

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info PDF files only, max 10MB per file

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How to Watermark a PDF Online

Protect your work by adding a watermark to your PDF — stamp text like "CONFIDENTIAL" across every page. Combine it with password protection or an eSignature for stronger control.

Watermark a PDF in 3 Easy Steps

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1Upload your PDF

Add the PDF you want to stamp by dragging it in or selecting it.

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2Customize the watermark

Enter your text and adjust opacity, angle and font size.

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3Download the watermarked PDF

Apply the watermark and download your branded PDF.

Illustration of a diagonal text watermark stamped across a PDF page

Why use EraserPro to watermark your PDF

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100% Free

Watermark your PDF without paying a cent — no watermarks and no forced sign-up.

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Private & Secure

Everything runs in your browser — files are never uploaded, so your data never leaves your device.

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No Installation

Works right in your web browser — there's nothing to download or install.

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Any Device

Use it on Windows, macOS, Linux, iOS or Android — the experience is seamless everywhere.

Frequently Asked Questions

Is my PDF uploaded to watermark it?

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No — the watermark is applied in your browser, so your file stays private.

Can I control how the watermark looks?

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Yes — set the text, opacity, rotation angle and font size to taste.

Does it watermark every page?

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Yes, your text is stamped across all pages of the document.

Is watermarking free?

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Yes, it is completely free with no sign-up.