What is the image file format for the covers? January 12, 2021 13:30 Updated On Shotgun events, the cover image file format is 16:9. Related articles How can I customise the visual aspect of my event tickets? How can I proceed to a refund ? Why can't I find the artist on the dropdown list? I'm an organisation, but I can't find a status other than that of a company. Can I create a private ticket office with a password?