Online Add Watermark to PDF

Add text or image watermarks to your PDF files online — free, fast, and fully private. No signup, no uploads, no tracking.

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Drag & drop your PDF here
or click to browse

Watermark Text

Font Size

Position

Transparency (%)

Rotation (degrees)

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Upload a PDF and add a watermark

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Privacy First — No Server Uploads
Your PDF and watermark are processed entirely in your browser. They never leave your device. No uploads, no tracking, no signup.

Add Watermark to PDF Online — Free, Fast & Private

Our online add watermark to PDF tool lets you protect your documents instantly. Whether you need to mark a file as confidential, add a draft stamp, or brand your business PDFs with a company logo watermark, this tool gives you complete control — all without uploading your file to any server. No signup. No watermarks added by us. Just a simple, secure way to add watermark to PDF online free.

✏️ Text Watermark

Add custom text like "CONFIDENTIAL", "DRAFT", or your company name. Adjust font size freely.

🖼️ Image Watermark

Upload PNG, JPG, WebP, or SVG as watermarks — perfect for logos and signatures.

🎯 Precise Positioning

Place watermarks in 7 preset positions: center, top, bottom, left, right, and corners.

🎨 Transparency Control

Adjust opacity from 5% to 100% for subtle or bold watermarks.

🔄 Rotation Support

Rotate watermarks from -90° to 90° for diagonal or angled placement.

🔒 100% Private

Your PDF never leaves your device. All processing happens locally in your browser.

How to Add a Watermark to a PDF Online

1. Drag and drop your PDF into the upload area or click to browse.
2. Choose between a text watermark or an image watermark.
3. Enter your watermark text or upload your logo image.
4. Select position, transparency level, and rotation angle.
5. Click "Add Watermark" — the tool processes your PDF instantly in your browser.
6. Download the watermarked PDF directly to your device.

Why Choose This Online PDF Watermark Tool?

Completely free online PDF watermark generator — no hidden fees, no watermarks added by the tool
No sign-up required — start adding watermarks to PDFs immediately
Privacy-first design — all processing happens locally in your browser
Fast and reliable — works with any PDF, even large files
Preserves original quality — adds watermarks without compressing or altering content

Protect Your Documents with Confidence

Adding watermarks to PDFs is essential for protecting intellectual property, branding documents, and marking files as drafts or confidential. Our free PDF watermark tool makes it easy to add professional watermarks to contracts, reports, presentations, e‑books, and more. Whether you're a business owner, legal professional, or student, this PDF stamper tool online helps you secure your work in seconds.

Frequently Asked Questions

Is this watermark tool free?

Yes. Our online PDF watermark tool is 100% free with no limits. No signup, no watermarks added by the tool, no hidden fees.

Do you store my PDF files?

No. Your PDF is processed entirely in your browser using pdf‑lib. The file never leaves your device. We don't upload, store, or have access to any of your files.

Can I add both text and image watermarks?

You can add either a text watermark or an image watermark per session. Choose the type that best fits your needs.

What image formats are supported?

You can upload PNG, JPG, JPEG, WebP, and SVG images as watermarks.

Does this tool work on mobile?

Yes. The tool works on any device with a modern browser — Windows, Mac, Linux, Android, or iOS.

Learn how to use this tool correctly by reading our step-by-step tutorial.

View Detailed Tutorial →