Compress WebP Images for Email
Email images must be small and universally compatible. Large images trigger spam filters, slow rendering in email clients, and create poor experiences on slow mobile connections. Modern image format developed by Google offering 25–35% smaller files than JPEG/PNG at equivalent visual quality. Use ImageSmith to compress your WebP images to the ideal file size for Email — target under 200KB for optimal performance. Processing is fully browser-based — no server uploads, no privacy risk.
Recommended format
JPEG
Max file size
200KB
Dimensions
600px wide maximum for email body images
✓Keep individual email images under 100KB to avoid spam filters
✓Total email HTML size (including images) should be under 1MB
✓Avoid WebP — Outlook and many email clients do not support it
✓Use a CDN to host email images rather than embedding them