Email image size best practice

Here are some best practices for email image size:

1. Keep it small:

• Aim for image file sizes of 100KB or less.
• For larger images, consider compressing them using tools like TinyPNG or ImageOptim.

2. Use the right format:

• Use JPEG for photographs and images with many colors.
• Use PNG for images with transparent backgrounds or text.
• Use GIF for images with animations or simple graphics.

3. Optimize for email:

• Use a maximum width of 600-650 pixels to ensure images display correctly in most email clients.
• Use a maximum height of 400-450 pixels to prevent images from being cut off.
• Use a 4:3 or 16:9 aspect ratio to ensure images display correctly in various email clients.

4. Use lazy loading:

• Use lazy loading techniques to load images only when the user scrolls to them, reducing the initial load time and improving email performance.

5. Consider using a CDN:

• Consider hosting your images on a Content Delivery Network (CDN) to reduce the load on your email server and improve image loading times.

6. Use alt text:

• Always include alt text for images to ensure that they are accessible to users who cannot see them.

7. Avoid using too many images:

• Keep the number of images in your email to a minimum to prevent it from becoming too large and slow to load.

8. Use image compression tools:

• Use tools like TinyPNG or ImageOptim to compress your images and reduce their file size.

9. Test your email:

• Test your email in various email clients and devices to ensure that images display correctly and are not too large.

10. Consider using a responsive design:

• Consider using a responsive design for your email to ensure that it adapts to different screen sizes and devices.

Here are some general guidelines for email image sizes:

• Header images: 600-650 pixels wide, 100-150 pixels tall
• Hero images: 600-650 pixels wide, 400-450 pixels tall
• Product images: 300-400 pixels wide, 200-250 pixels tall
• Icon images: 16-24 pixels wide, 16-24 pixels tall

Remember to always test your email in various email clients and devices to ensure that images display correctly and are not too large.