"DRAFT" stamp
Input10-page document PDF
Options
text: BẢN NHÁPposition: giữaopacity: 30%angle: 45°
→OutputPDF with diagonal watermark
🎯Mark unapproved documents
Text Watermark
Add customizable text watermark to PDF files
Drag & drop files here
or click to choose files
How to text watermark in 3 Steps
1
Upload the PDF file for watermarking
2
Enter text, choose font size, color, and opacity
3
Click add watermark and download the PDF
About the Text Watermark Tool
Add text watermarks to PDF online with full customization: content, font size, color, opacity, rotation angle, and position. Supports Vietnamese characters with diacritics via Inter font. Two modes: center or mosaic (full-page repeat).
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Full Unicode Support
Inter font embedded — displays all Vietnamese characters with diacritics: ắ, ẫ, ộ, ứ, ỹ and more.
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Rich Customization
7 options: content, font size (24-96), color (4 colors), opacity (10-70%), rotation, position, over/under layer.
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Mosaic Mode
Watermark repeats in a grid pattern across the entire page, like professional security watermarks.
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Applied to All Pages
Watermark automatically added to every page in the PDF. Perfect for multi-page documents.
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BetaPDF renders watermarks directly onto the PDF stream using a font that fully supports Vietnamese diacritics. Mosaic mode automatically calculates the grid layout based on page dimensions and font size for even coverage.
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Perfect for: marking documents as "DRAFT" or "CONFIDENTIAL", branding portfolios, preventing unauthorized copying of sensitive documents. For image/logo watermarks instead of text, use image watermark. After adding watermarks, you can password-protect the PDF for extra security.
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Usage Examples
Security mosaic
Input5-page contract PDF
Options
text: MẬTlayout: mosaiccolor: đỏ
→OutputPDF with grid watermark pattern
🎯Protect sensitive documents
Frequently Asked Questions
Yes — the system uses Inter font that fully supports Unicode characters including accented letters.
The watermark is repeated in a grid pattern across the entire page, like a security watermark.
Yes — choose "Behind content" in the Layer option to place the watermark behind text and images.
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