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Image Watermark

Add text or image watermarks to your images. Perfect for copyright protection, branding, and product photography.

💡 Tips for Best Results

  • Text Watermark: Use high contrast colors for visibility
  • Image Watermark: Use PNG with transparency for best results
  • Opacity: 50-70% is optimal for visibility without being too intrusive
  • Position: Bottom-right is standard, but center works for strong protection
  • Privacy: All processing happens in your browser - no uploads to server

Key Features​

  • Add text or image watermarks
  • 7 position options (top-left, top-center, top-right, center, bottom-left, bottom-center, bottom-right)
  • Adjustable opacity (10-100%)
  • Text watermark: custom text, font size (20-200px), color picker
  • Image watermark: upload PNG/JPG
  • Real-time preview

Watermark Settings​

Watermark Type​

Text Watermark​

  • Text Input: Enter your text (e.g., "© 2024 Your Name", "SAMPLE")
  • Font Size: 20px ~ 200px
  • Color: Choose any color with color picker
  • Opacity: 10% ~ 100% (lower = more transparent)

Image Watermark​

  • Logo Upload: Upload PNG or JPG file
  • Transparent Background: PNG supports transparency
  • Size: Automatically adjusted to fit image
  • Opacity: 10% ~ 100% adjustable

Position​

7 position options:

  • Top Left
  • Top Center
  • Top Right
  • Center
  • Bottom Left
  • Bottom Center
  • Bottom Right

Opacity​

  • Range: 10% ~ 100%
  • Recommended: 30-50% (text), 20-40% (image)
  • Lower values = more transparent

Use Cases​

Example: Add "© 2024 Your Name" to photos
Position: Bottom Right
Opacity: 40%
Purpose: Prevent unauthorized use

2. Branding​

Example: Add company logo to product photos
Position: Bottom Center
Opacity: 30%
Purpose: Increase brand awareness

3. Sample Images​

Example: Add "SAMPLE" text
Position: Center
Opacity: 20%
Purpose: Mark preview/sample images

4. Social Media Content​

Example: Add account name to Instagram photos
Position: Bottom Left
Opacity: 50%
Purpose: Show attribution

Supported Formats​

  • Input Image: PNG, JPG, JPEG
  • Watermark Image: PNG (transparent background supported), JPG
  • Output: PNG (high quality)
  • Max Size: 50MB

Watermark Tips​

Text Watermark​

  • Recommended Text: "© 2024 Your Name"
  • Font Size: 30-50px
  • Color: White (#FFFFFF) or Black (#000000)
  • Opacity: 40-60%
  • Position: Bottom Right or Bottom Left

Brand Name​

  • Recommended Text: "Company Name" or "Brand"
  • Font Size: 40-80px
  • Color: Brand color
  • Opacity: 30-50%
  • Position: Bottom Center

Sample Mark​

  • Recommended Text: "SAMPLE" or "PREVIEW"
  • Font Size: 100-150px
  • Color: Red (#FF0000) or Gray (#808080)
  • Opacity: 20-30%
  • Position: Center

Image Watermark​

Logo Preparation​

  • Format: PNG (transparent background recommended)
  • Resolution: 500px × 500px or smaller
  • Color: Solid or simple design recommended
  • Opacity: 20-40%

Technical Details​

Processing Method​

  • Canvas API: HTML5 Canvas for image composition
  • Client-side: Processed directly in browser
  • Layer Compositing: Watermark layer over original image
  • Alpha Blending: Alpha channel for opacity control

Privacy​

  • ✅ All processing happens in your browser
  • ✅ Images are not uploaded to any server
  • ✅ 100% client-side processing
  • ✅ Works offline (after page load)

FAQ​

Q: Can the watermark be removed?​

A: When saved as PNG, the watermark is permanently merged. The original image is needed to remove it.

Q: Can I add multiple watermarks at once?​

A: Currently supports one watermark at a time. Add them sequentially if needed.

Q: What if the text color doesn't stand out against the background?​

A: Use white for dark backgrounds, black for light backgrounds. Adjust opacity for better visibility.

Browser Support​

  • ✅ Chrome 50+
  • ✅ Firefox 50+
  • ✅ Safari 11+
  • ✅ Edge 79+
  • ✅ Mobile browsers (iOS Safari, Chrome Mobile)