Free Image Compressor for Email Marketing
Compress email images to reduce load times and avoid spam filters. Keep total email size under 100KB for maximum deliverability. Free tool.
Email clients handle images differently than browsers — Outlook blocks them by default, Gmail clips emails over 102KB, and many mobile clients load images on cellular connections. Heavy images in emails directly reduce open rates, click-through rates, and deliverability.
Tips for Email Marketing
Keep total email size under 100KB including all images — Gmail clips anything larger
Compress hero images to under 40KB and product thumbnails to under 20KB each
Use JPEG for photos and PNG-8 (not PNG-24) for graphics with limited colors
Always include descriptive alt text since many email clients block images by default
Try This Example
“Compress 5 email campaign images to under 40KB each for a weekly newsletter template”