For Mailchimp email banners, the recommended width is typically 600–700 pixels for desktop, with heights ranging from 90 to 200 pixels, and mobile widths around 350 pixels. Recommended Dimensions Desktop Banners: Width: 600–700 pixels (matching the template width) Height: 90–200 pixels for standard banners, or 350–500 pixels for larger visual banners Mobile Banners: Width: 200–350 pixels Height: 100–200 pixels depending on the design Template Considerations: Mailchimp’s legacy templates are 600 pixels wide, while the new builder templates are 660 pixels wide. Images should be sized to fit the content block; Mailchimp will automatically resize images to prevent clipping or slow loading. For background images, larger widths of 1500–2500 pixels may be used for landing pages, but keep in mind that larger images can slow load times. When it comes to creating visually appealing email campaigns with Mailchimp, one crucial aspect to consider is the size of your images. So, what size should Mailchimp images be? The optimal image dimensions for Mailchimp are 600 pixels