Add Watermark to PDF
Add custom text watermarks to your PDF pages. Supports multi-line text, rotation, transparency, and tiled layouts.
Drop a PDF file here
or click to browse
Supports up to 50MB
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How to add a watermark to PDF
- Upload your PDF by clicking or dragging
- Type your watermark text and customize appearance
- Preview the result in real-time
- Click "Apply Watermark & Download" to save
Note: Watermarks are rendered as images using your browser's font engine, supporting all languages including Chinese, Japanese, and Arabic.
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Why use our watermark tool?
Add confidentiality notices, draft stamps, or branding to your PDFs. All processing runs locally — your files never leave your device.
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Frequently Asked Questions
Can I watermark with Chinese text?
Yes. Watermarks are rendered using your system fonts, so any language supported by your browser will work.
Does the watermark reduce quality?
The watermark is added as a high-resolution image overlay. Original PDF content is not modified.
Is this tool free?
Yes, 100% free with no usage limits. No signup or payment required.