Yes. PDFDocker is completely free to use with no hidden fees, no watermarks, and no file-size limits.

Do I need to create an account to edit a PDF?

No account is needed. Upload your PDF and start editing immediately — no email or sign-up required.

Are my files uploaded to a server?

No. All PDF processing happens entirely in your browser using JavaScript. Your files never leave your device.

What PDF tools does PDFDocker offer?

PDFDocker offers 18+ tools: PDF editor, Merge PDF, Split PDF, Compress PDF, PDF to Word, Word to PDF, PDF to JPG, JPG to PDF, Watermark PDF, Rotate PDF, Lock PDF, Unlock PDF, Sign PDF, Extract Text, Compare PDFs, Crop PDF, HTML to PDF, and PDF to HTML.

Which browsers does PDFDocker support?

PDFDocker works in all modern browsers including Chrome, Firefox, Safari, and Edge on both desktop and mobile.

All Tools › Watermark PDF

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Watermark PDF

Add a custom diagonal text watermark to every page of your PDF.

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Drop a file here or click to browse

Accepts: .pdf,application/pdf

Watermark text

Color

Font size: 60pt

Opacity: 25%

Rotation: 45°

Preview: CONFIDENTIAL

How to Add Watermark to PDF

Three steps — no account, no software, no waiting.

Upload your PDF

Select the PDF you want to add a watermark to.

Set watermark text

Enter your watermark text, choose opacity, size, and position.

Download watermarked PDF

Download your watermarked PDF instantly.

Why use PDFDocker?

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Custom text watermarks

Add any text as a watermark with customizable font, size, opacity and angle.

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All pages covered

Watermark is applied to every page of your PDF automatically.

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100% private

Your PDF never leaves your browser during watermark processing.

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Free to use

Add watermarks to PDFs for free with no account needed.

Frequently asked questions

How do I add a watermark to a PDF for free?

Upload your PDF to PDFDocker's watermark tool, enter your watermark text, and download the result — no sign-up required.

Can I customize the watermark appearance?

Yes. You can customize the text, opacity, size, color, and position of the watermark.

Will the watermark appear on all pages?

Yes. The watermark is automatically applied to every page of your PDF.

Is adding a watermark to PDF free?

Yes, completely free with no account required.

Related PDF Tools

🔒Lock PDF with Password 🔗Merge PDF Files Online 🔃Rotate PDF Pages