Add Watermark to PDF
Add text or image watermarks with full control over opacity and position. Your files never leave your device.
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Frequently Asked Questions
- Can I add a transparent watermark?
- Yes. Use the opacity slider to control transparency from fully visible to very subtle.
- Does the watermark appear on every page?
- Yes, the watermark is applied to every page of the PDF automatically.
- Is this tool free to use?
- Yes, completely free. No account, no subscription, no hidden limits.
- Are my files safe? Do you upload them?
- Your files never leave your device. All processing runs locally in your browser using JavaScript — nothing is sent to any server.
- Does it work on mobile?
- Yes, it works on all modern browsers including mobile Safari and Chrome on iOS and Android.