Image to Base64 Converter

Convert images to Base64 for inline embedding in transactional emails. Best for small logos and icons.

When to use Base64 images in emails

Good for

  • • Small logos under 50KB
  • • Icons and simple graphics
  • • Transactional email headers
  • • When image hosting isn't available

Avoid for

  • • Large images or photos
  • • Marketing email banners
  • • Multiple images per email
  • • Images over 100KB

Keep in mind

  • • Some clients block Base64
  • • Increases email size ~33%
  • • Gmail clips emails over 102KB
  • • Test before sending