Watermark PDF
Add customizable text watermarks across every page or specific ranges. Adjust opacity, angle, colors, and presets with live visual preview.
Drop your PDF file here
or browse to select a document to watermark
Select one file · Processed 100% locally
How to Use Watermark PDF
Upload PDF
Drop the PDF you want to watermark.
Customize Watermark
Type your text, adjust opacity, angle, color, and select a preset (diagonal, center, footer).
Download
Download your watermarked document.
Capabilities & Features
- •Custom text with adjustable opacity (5% - 100%)
- •Position presets: Diagonal, Centered, and Footer
- •Rotation angle slider (-90° to +90°)
- •Color picker support
- •Apply to all pages or specific page ranges
Important Notes & Limitations
- •Watermarks are stamped on top of page content to prevent removal by basic viewers.
Client-Side Privacy Guarantee
When using Watermark PDF, your files, extracted text, and document metadata are processed exclusively inside your browser using client-side JavaScript, WebAssembly, and native Web Crypto APIs. Your document data is never sent to our servers or any cloud service. Once you close this tab or click clear, volatile memory is automatically released.
Frequently Asked Questions
Can watermarks be removed easily?
Watermarks are embedded directly into the PDF content stream, making them permanent in standard readers.
Can I watermark only certain pages?
Yes, choose 'Custom Range' and enter page numbers like '1-3, 5'.
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