Formatting Images: Complete Guide to Website Image Requirements and Best Practices

Formatting Images: Complete Guide to Website Image Requirements and Best Practices

By Michael Turner

January 1, 2025 at 01:07 AM

Images must be properly formatted for optimal display across different screen sizes and devices. Here's what you need to know:

Core Requirements:

  • Maximum file size: 20 MB (recommended: under 500 KB)
  • Minimum width: 1500px (recommended: 2500px)
  • Supported formats: JPG, PNG, GIF
  • Color mode: RGB
  • Resolution limit: 120 megapixels

Best Practices for Web Display:

  • Upload high-quality images larger than your intended display size
  • Use PNG format for images containing text or requiring transparency
  • Match image aspect ratio to the container shape to minimize cropping
  • Keep total page size under 5MB for faster loading

Responsive Design: Images are automatically converted into 7 different widths:

  • 100px
  • 300px
  • 500px
  • 750px
  • 1000px
  • 1500px
  • 2500px

The system selects the appropriate version based on the visitor's device screen size.

Image Optimization Tips:

  • Check file specifications before uploading
  • Consider aspect ratios for consistent display
  • Use transparent backgrounds when needed (PNG format)
  • Add alt text for accessibility and SEO
  • Avoid embedding text in images - use overlays instead

Troubleshooting Common Issues:

  • Blurry images: Check if width is at least 1500px
  • Cropping issues: Match aspect ratio to container
  • Color distortion: Verify RGB color mode
  • Upload errors: Ensure file meets size and resolution limits

For logos and icons:

  • Use different specifications for website logos
  • Follow special requirements for browser favicon
  • Consider square aspect ratios for consistent display

Remember to keep original files on your computer as a backup since uploaded images may be compressed or modified during processing.

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