Watermark PDF
Add text or image watermarks to PDF pages in your browser.
Processed in your browser. Your files stay on your device and are never uploaded to Dockzio servers.
Tool
Why Dockzio?
Simple tools that respect your time and your privacy.
Free and instant
No subscriptions, no paywalls, no waiting.
No sign-up required
Open a tool and get to work immediately.
Private by design
Processing happens locally in your browser whenever possible.
Beautifully built
Clean, fast interfaces designed for everyday productivity.
About PDF watermark
Stamp text or an image onto PDF pages without uploading anything. Adjust opacity, rotation, size, and placement, then download a new file — all in your browser.
How it works
Dockzio overlays your watermark with pdf-lib on the pages you select. The live preview is an approximate canvas overlay so you can tune settings quickly.
Text or image
Use a short phrase like CONFIDENTIAL, or stamp a PNG/JPG/WebP logo. PNG transparency is preserved.
Placement
Center, corners, or tile across the page. Rotation and opacity help keep content readable underneath.
Privacy first
Everything is processed locally in your browser. Your documents are never sent to a Dockzio server.
FAQ
Quick answers to common questions.
Learning Center
Guides related to Watermark PDF
Short explainers that pair well with this tool — concepts first, then practice.
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