Your event image represents your event and should capture the experience your attendees have to look forward to. To make sure your event image looks great, the recommended eventbrite banner size is 2160 x 1080px (2:1 ratio—twice as wide as tall) and the image must not be larger than 10MB.
If your image is twice as tall as wide, add it to the Event Description.
If after you uploaded the image, you are prompted to crop it and cropping it messes it up, you can adjust the image size with Adobe Photoshop or an online image editor.
• General: Avoid images that have a lot of text, logos, and fliers. The additional information in the photo can distract attendees when viewing it on your event listing, eventbrite search directory, and other promotional tools.