Watermark PDF
Add a text watermark to your PDF with live preview — control position, opacity, size and rotation. Free, no uploads.
Popular PDF Tools
YOYOPDF provides browser-based tools for common PDF and image tasks. Fast, easy and free.
Powerful Tools to Work with PDFs
YOYOPDF provides browser-based tools for common PDF and image tasks. Fast, easy and free.
Local by Design
Document contents stay on your device while tools process them in the browser; YOYOPDF does not upload your files.
Blazing Fast
Our tools are optimized for speed to save your time and increase productivity.
Works Across Devices
Use YOYOPDF in a modern desktop, tablet or mobile browser. No installation required.
Always Free
All tools are completely free to use. No hidden charges, no sign up needed.
Everything You Need. All in One Place.
Use YOYOPDF for common PDF and image tasks while keeping document processing on your own device.
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View all tools →Frequently asked questions
Can I preview the watermark before saving?
Yes, position, opacity, size and rotation all update in a live preview as you adjust them.
Can I control how transparent the watermark is?
Yes, opacity is adjustable so the watermark can be subtle or bold.
Does the watermark apply to every page automatically?
Yes, by default it's applied to all pages using the same settings.