Compress 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. Use ImageSmith to compress your Email images before sending — free, instant, and entirely in your browser. No account needed, no watermarks. Target under 200KB for best results on Email.
Max size
200 KB
Format
JPEG
Size
600px wide maximum for email body images
- 1Keep individual email images under 100KB to avoid spam filters
- 2Total email HTML size (including images) should be under 1MB
- 3Avoid WebP — Outlook and many email clients do not support it
- 4Use a CDN to host email images rather than embedding them
Compress by format
Other platforms
Email image compression FAQ
Large images slow email load times, increase spam filter scores, and look broken on slow mobile connections. Keep email images under 100KB each for best deliverability.
Use JPEG for photographs and PNG for graphics in email. Avoid WebP since Outlook and many corporate email clients do not render it. GIF works for simple animations.