Images play a key role in how your emails look and perform. Choosing the right size and format ensures your campaigns display properly across devices, load quickly, and deliver a professional subscriber experience.
Recommended Image Dimensions
Width: Between 600–800 pixels
This is the standard range for most email templates.
Keeps images sharp on desktop and mobile without causing horizontal scrolling.
Height: Flexible
Avoid overly tall images, as long scrolling images can hurt readability.
File Size Guidelines
Standard Images (JPG, PNG):
Ideally, around 200 KB each.
Maximum up to 1 MB, but lighter is better.
GIFs (Animated):
Keep under 500 KB for best performance.
Do not exceed 1 MB, or loading speed may suffer.
Why Image Size Matters
Faster Load Times: Large images slow down email loading, especially on mobile and slower connections.
Better Deliverability: Emails with oversized files may be clipped or flagged by inbox providers.
Consistent Display: Optimized images prevent distortion, pixelation, or formatting issues.
By following these guidelines, your emails will load quickly, look professional, and provide a smooth experience.