Image Optimizer
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Image Optimizer

Free online image optimization tool. Compress, watermark, and resize images with 100% client-side processing.

Product

  • Batch Optimizer
  • Watermark Tool
  • Social Media Resize
  • Background Removal

Resources

  • All Guides
  • FAQ

Legal

  • Privacy Policy
  • Terms of Service

© 2024-2025 Image Optimizer. All rights reserved. Made with ❤️ for the web.

Add Watermark

Protect your images with custom text watermarks. All processing happens in your browser.

✍️
Custom Text
Add your own copyright, brand, or signature
📍
9 Positions
Place watermark anywhere on the image
🎨
Color Picker
Choose any color or use white/black presets
👁️
Opacity Control
Adjust transparency from subtle to bold
🔤
Font Size
Scale text from 12px to 200px
👁️‍🗨️
Live Preview
See changes in real-time as you adjust
✍️
Custom Text
Add your own copyright, brand, or signature
📍
9 Positions
Place watermark anywhere on the image
🎨
Color Picker
Choose any color or use white/black presets
👁️
Opacity Control
Adjust transparency from subtle to bold
🔤
Font Size
Scale text from 12px to 200px
👁️‍🗨️
Live Preview
See changes in real-time as you adjust
🖼️

Upload an Image

Select an image to add a watermark. Supports JPEG, PNG, and WebP formats. Your image stays private - all processing happens locally.

Perfect For

📷 Photographers

Protect your work with copyright watermarks. Add your name or studio branding to prevent unauthorized use of your photos.

🎨 Artists & Designers

Sign your digital artwork. Add subtle watermarks that don't distract from your creative work but provide attribution.

🏢 Businesses

Brand your marketing materials. Add company logos or taglines to promotional images for social media and advertising.

📱 Content Creators

Watermark social media content. Add handles or branding to Instagram, TikTok, and YouTube thumbnails for recognition.

💡 Watermark Best Practices

  • •Placement: Bottom corners are standard, center for stronger protection
  • •Opacity: 30-50% for subtle protection, 70-100% for bold branding
  • •Color: White for dark images, black for light images, high contrast works best
  • •Size: Large enough to read but not overwhelming (48-72px typical)
  • •Text: Keep it short - name, year, or handle (© 2025 YourName)