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Add Watermark to PDF — Text or Image, Fully Customizable

Protect or brand your PDF documents by adding text or image watermarks. Control position, opacity, rotation, and size — with a live preview before you apply.

Free Forever No Account Needed 100% In-Browser Live Preview Included

Drop your PDF here to add a watermark

or click the button to browse from your device

PDF files only  ·  Live preview after upload

File stays on your device — never sent to servers See live preview before applying Text or image watermarks supported

How to Use Add Watermark to PDF Free

1

Upload PDF

Upload your PDF file from your device, or simply drag and drop it into the upload box. You can add watermarks to any PDF document.

2

Customize Watermark

Choose between text or image watermark. Customize the appearance, position, opacity, rotation, and other settings using our intuitive controls.

3

Apply & Download

Preview your watermark in real-time and click "Apply Watermark" to process your PDF. Download the watermarked file instantly. All processing happens in your browser for privacy.

Why Use PDFlyst to Watermark PDFs?

Live Real-Time Preview

See exactly how your watermark will look on the PDF before applying it. Our live preview updates instantly as you adjust settings, ensuring perfect results every time.

Text & Image Watermarks

Add custom text watermarks with full control over font, size, color, and content. Or upload your own image watermarks for logos, signatures, or branded elements.

Advanced Customization Options

Fine-tune your watermark with precise controls for opacity, rotation angle, size, and positioning. Choose from preset positions or place watermarks exactly where you need them.

Fast Client-Side Processing

All watermark processing happens directly in your browser using JavaScript. No files are uploaded to servers, ensuring complete privacy and instant results.

Cross-Platform Compatibility

Works seamlessly on desktop, tablet, and mobile devices. No software installation required - access our PDF watermark tool from any modern browser.

Frequently Asked Questions

What types of watermarks can I add?

The tool supports both text and image watermarks. For text, you can customize the font size, color, opacity, and rotation. For images, upload any PNG or JPG logo or signature and control its size and transparency.

Is this tool free with no hidden fees?

Yes, completely free. No account, no subscription, and the output PDF has no added branding or watermarks from us. Use it as many times as you need.

Is my PDF safe — is it uploaded to your servers?

Your PDF never leaves your device. All watermark processing runs locally in your browser via JavaScript — we have zero access to your files at any point.

Can I control where the watermark is placed?

Yes — choose from 9 preset positions (top-left, top-center, top-right, center-left, center, center-right, bottom-left, bottom-center, bottom-right). You can also adjust rotation from −180° to 180°.

Can I see the watermark before applying it?

Yes, the built-in live preview updates in real time as you change any setting. You can browse through all pages of your PDF to confirm the look before applying.