Add Watermark to PDF

Protect and brand your PDF documents by adding custom text or image watermarks.

Drag & Drop PDF File Here

or

No file selected.
Watermark Options
Uncheck to apply only to the first page.
Supported formats: PNG, JPG, GIF. Recommended: PNG with transparency.
Uncheck to apply only to the first page.
PDF Preview (First Page)
Upload a PDF to see preview.
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How to Add Watermark to PDF

Secure, client-side watermarking workflow — your documents never leave your device, ensuring total confidentiality for proprietary or personal content.

1

Upload Your PDF

Drag & drop your file into the upload zone above, or click to select a document directly from your local storage.

2

Craft Your Watermark

Type your custom text, adjust opacity, rotation, and size. Choose from preset stamps like "CONFIDENTIAL", "DRAFT", or "SAMPLE".

3

Set Position & Behavior

Choose fixed diagonal tiling, center stamp, or custom coordinates. Select whether to apply to all pages or specific ranges.

4

Download Watermarked PDF

Process the document instantly. Your new watermarked PDF is ready for download with zero quality loss and no external tracking.

🔒 Client-Side Confidentiality

All watermark rendering and PDF compositing happen locally in your browser using WebAssembly and Canvas — no file uploads to any server, no logs, no data retention.

Advanced Watermarking Capabilities

Dynamic Rotation & Tiling

Apply diagonal tiling across entire pages or set a single rotated stamp. Perfect for "DRAFT" or "DO NOT COPY" overlays.

Opacity & Blending Modes

Fine-tune watermark transparency from subtle to bold. Choose between overlay, multiply, and other blend modes for seamless integration.

Rich Text Styling

Choose from system fonts or upload custom typefaces. Adjust size, weight, and color to match your brand identity.

Vector & Image Watermarks

Upload logo images or use vector-based text for crisp, scalable watermarks that remain sharp at any zoom level.

Lightning-Fast Local Processing

Powered by optimized WebAssembly, watermarks are rendered in milliseconds per page. Process hundreds of pages instantly without network delays.

Frequently Asked Questions

1 Will the watermark cover important content?
Not at all. You control opacity, size, and placement. Use semi-transparent overlays or position stamps in margins. The watermark sits on a separate layer above the content, preserving readability.
2 Can I apply different watermarks to different pages?
Yes. Use the page range selector to apply unique watermarks to specific page groups. For example, "DRAFT" on first 10 pages and "CONFIDENTIAL" on the rest.
3 Is there a limit on watermark text length or image size?
No hard limits. Text fields support lengthy strings (e.g., legal disclaimers). Image watermarks accept standard formats (PNG, JPG, SVG) up to your device's memory capacity.
4 Does the tool support password-protected PDFs?
Yes. You'll be prompted to enter the document password. The decryption happens locally — your password is never transmitted. After processing, the watermarked PDF retains the original security settings.
5 Do you store or track my documents anywhere?
Absolutely zero storage. All processing occurs in your browser's memory. Files are never uploaded to any server, and all data is purged when you close the tab or refresh the page.