MegaToolbox - All-in-One Online Utility Hub

📄 Add Watermark to PDF

Stamp text or image over your PDF — free, fast & secure

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Click to upload or drag & drop

Supported: PDF files (max 50 MB)

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Watermark Text

Font Family Helvetica (Sans-serif) Times Roman (Serif) Courier (Monospace)

Font Style Normal Bold Italic Bold Italic

Font Size (px)

60

Text Color

#ff0000

Opacity

35%

Position Center Diagonal (45°) Diagonal (-45°) Tile (Repeat) Top Left Top Center Top Right Middle Left Middle Right Bottom Left Bottom Center Bottom Right

Apply To All Pages First Page Only

Watermark Image (PNG or JPEG)

📷 Click to upload watermark image

Scale (%)

40%

Opacity

40%

Position Center Tile (Repeat) Top Left Top Center Top Right Middle Left Middle Right Bottom Left Bottom Center Bottom Right

Apply To All Pages First Page Only

Processing your PDF...

Free Online PDF Watermark Tool

Need to protect your PDF documents or add branding? Our free PDF watermark tool lets you stamp custom text or images onto any PDF in seconds. Whether you're marking documents as "Confidential," adding a company logo, or protecting copyrighted material — this tool handles it all directly in your browser with no uploads to any server. Your files stay private and secure.

✨ Key Features: Text & image watermarks • Adjustable opacity • Multiple positions • Diagonal & tiled stamps • Custom fonts & colors • Works on all devices • 100% client-side processing • No sign-up required

Why Add a Watermark to Your PDF?

• Copyright Protection: Deter unauthorized use of your digital content by visibly marking ownership.
• Branding: Reinforce your brand identity by stamping logos on reports, ebooks, and presentations.
• Document Status: Clearly mark drafts, revisions, or confidential materials to prevent mishandling.
• Legal & Compliance: Meet regulatory requirements by stamping documents with appropriate labels.

How to Use This PDF Watermark Tool

Using the tool is straightforward. Follow these simple steps:

1. Upload your PDF — Drag and drop or click to select a PDF file (max 50 MB).
2. Choose watermark type — Select either a text watermark (like "DRAFT" or "CONFIDENTIAL") or upload an image logo.
3. Customize the look — Adjust font, size, color, opacity, and position. For images, set the scale and opacity.
4. Process & download — Click the button to generate your watermarked PDF, then download it instantly.

Frequently Asked Questions

🔹 Is my PDF uploaded to any server? No. All processing happens entirely within your browser using client-side technology. Your files never leave your device.

🔹 What types of watermarks can I add? You can add text watermarks with customizable fonts, colors, and styles, or image watermarks (PNG/JPEG) such as logos, signatures, or stamps.

🔹 Can I control the transparency? Absolutely. Both text and image watermarks have an opacity slider ranging from 5% to 100%, giving you full control over the watermark subtlety.

🔹 Does it support multi-page PDFs? Yes! You can apply the watermark to all pages or just the first page of your PDF document.

🔹 What positions are available? Choose from center, diagonal, tiled/repeated, and all corner/edge positions (top-left, top-center, top-right, middle-left, middle-right, bottom-left, bottom-center, bottom-right).

🔹 Is this tool free to use? Yes, this PDF watermark tool is completely free with no hidden costs, sign-ups, or watermarks added by us.

Tip: For best results with image watermarks, use PNG files with transparent backgrounds. This ensures your logo blends seamlessly without an unsightly white box around it.