Watermark PDF
Apply custom text watermarks to protect your PDF documents.
Technical Specifications & Limits
How to use Watermark PDF
Follow three simple steps to process your document right inside your browser.
Upload PDF
Select the PDF file you want to watermark.
Customize Watermark
Enter your watermark text (e.g., 'CONFIDENTIAL', 'DRAFT', 'DO NOT COPY') and adjust font size, opacity, color, and rotation angle.
Apply & Download
Click Apply Watermark and download your protected PDF file instantly.
About Watermark PDF
Stamp custom text watermarks onto PDF pages to safeguard confidential files, mark draft documents, protect copyright, or brand business collateral. Choose custom text like 'CONFIDENTIAL', 'SAMPLE', or company names with full control over opacity, font scaling, and rotation angles. Everything is rendered client-side.
AviraPDF is engineered to process your documents at hardware speed without sending files across the internet. By executing JavaScript and WebAssembly memory streams locally, you avoid bandwidth delays and maintain complete control over your sensitive documents.
Frequently Asked Questions about Watermark PDF
Get quick answers to common questions about using this tool.
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