Image Compression for Email Marketing: Best Practices

·5 min read
EmailCompressionMarketing
Mike Johnson· Email Marketing Specialist

Why Image Size Matters in Email

Large images slow down email loading, increase bounce rates, and may trigger spam filters. Aim for images under 200KB each and total email size under 1MB.

Best Formats for Email

  • JPEG: Best for photographs, use quality 70-80
  • WebP: Great compression but not supported in Outlook — use as fallback
  • PNG: Use for logos, icons, graphics with text
  • GIF: Limited to simple animations, large file sizes

    • Optimization Tips

  • Resize to exact display dimensions (don't rely on HTML width/height)
  • Strip EXIF data to save space
  • Use progressive JPEG for large images
  • Keep total image count under 10 per email

    • Related Guides

  • Compress Images Without Losing Quality
  • Optimize Images for Shopify & WordPress

    • Ready to optimize your images?

    Try BulkPicConv — Free