How to Resize an Image for Email?
Resize your images for emails and newsletters. Optimal dimensions for all email clients.
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Images in emails need careful sizing to display correctly across all email clients and devices.
Too large and your email may be blocked or slow to load. Too small and your images look pixelated.
Learn the ideal dimensions for email images.
Table of contents
Email Width Constraints
Standard email width: 600 pixels.
Maximum image width: 600-700 pixels.
Mobile adapts to screen width.
Don't rely on automatic resizing.
Recommended Dimensions
Full-width images: 600 pixels wide.
Header images: 600 x 200 pixels typical.
Inline images: 200-300 pixels wide.
Product thumbnails: 150-200 pixels.
File Size Matters
Keep each image under 100 KB.
Total email size: under 1 MB.
Large images slow loading.
Some clients block heavy emails.
Retina Considerations
For retina, use 2x dimensions.
1200 pixel image displayed at 600px.
Compress well to offset larger size.
Not all email clients support high DPI.
Recommended tools
Resize your images in pixels or percentage. Keep proportions or set custom dimen...
How to do it in 3 steps
Determine image role (header, inline, product).
Resize to appropriate dimensions (max 600px wide).
Compress to under 100 KB per image.
Common mistakes to avoid
- ✗Images too wide (break email layout).
- ✗Not testing on mobile clients.
- ✗Forgetting about Gmail's 102 KB HTML limit.
- ✗Using unsupported formats like WebP.
Frequently asked questions
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