Here is a complete, ready-to-run HTML document that adds watermarks (text or image) to PDF files. It includes a professional article and FAQ section, and runs entirely client-side with no uploads. ```html Watermark PDF | Add Text or Image Watermark | Free & Private

💧 Watermark PDF – Protect Your Documents

Add text or image watermark (logo, stamp) to any PDF. Adjust opacity, position, rotation, and scale. 100% local, no upload.

📄

Upload PDF to watermark

Browse PDF

🖼️

Optional: Upload image watermark (PNG/JPG)

Choose Image

⚙️ Watermark Settings

Type:

Text: Font Size: Color:

Image preview:

None

Opacity: 30% Rotation (deg): -30°

Position: Scale (%): 60%

📄 PDF Preview (click for custom position)

Page 1

💡 Tip: Select "Custom" position then click on preview to set watermark location.

🖌️ Watermark Preview

(preview will appear here)

🔒 100% private: No file upload. All processing in your browser.

📘 Watermark PDF: Complete Guide & Use Cases

Our free PDF watermarking tool lets you add text or image watermarks to protect your intellectual property, mark drafts, or brand documents. Perfect for confidential reports, e-books, contracts, and design proofs. No upload, no registration, fully client-side.

✨ How It Works

Upload your PDF, choose text or image watermark, adjust opacity, rotation, scale, and position. The tool uses pdf-lib to embed the watermark directly into the PDF file. You can preview the result before downloading. All processing happens locally – your files never leave your device.

🚀 Key Features

✅ Text watermark (custom text, font size, color).
✅ Image watermark (PNG/JPG with transparency support).
✅ Adjustable opacity (10% to 100%).
✅ Rotate watermark (-90° to +90°).
✅ Scale watermark from 20% to 150%.
✅ Predefined positions (center, corners) or custom click-to-place.
✅ Multi-page support – watermark applied to all pages.
✅ 100% client-side, zero upload, private.

❓ Frequently Asked Questions

Is the watermark permanent?

Yes, the watermark is embedded into the PDF content. It cannot be removed without editing software. Always keep a backup of the original.

Can I watermark only specific pages?

Currently the tool applies watermark to all pages. For selective pages, you can split PDFs using other tools then combine.

What image formats are supported?

PNG (recommended for transparency) and JPEG. The image will be embedded as-is.

Does it support transparent background watermarks?

Yes. PNG images with alpha transparency are preserved. For text, the background is transparent, only the text is drawn.

Can I add multiple watermarks?

You can apply one watermark per run. To add multiple, download and re-upload the watermarked PDF.

Is my PDF data secure?

Absolutely. Everything runs in your browser. No file is uploaded to any server.

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