Compress BMP 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. Uncompressed Windows bitmap format with very large file sizes. Not suitable for web use without compression. Use ImageSmith to compress your BMP images to the ideal file size for Email — target under 200KB for optimal performance. Processing is fully browser-based — no server uploads.
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
Compress BMP for Other Platforms
Compress BMP for Email — FAQ
Email works best with images under 200KB. Recommended dimensions: 600px wide maximum for email body images. ImageSmith can compress BMP images to any target size in seconds.
Email primarily supports JPEG, PNG, GIF. Converting to JPEG is recommended for best compatibility.
Upload your BMP image to ImageSmith, set a target size under 200KB, and compress. Keep individual email images under 100KB to avoid spam filters
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.