Hi there!
I created a picture for my gig, which looks great on my laptop, but when I checked it on the mobile app, the picture is clearly showing at a different aspect ratio (it’s more square) and it zooms in on part of the picture so you can’t see it all properly, and that does not look good.
What file type, aspect ratio and pic size should I be using to create something that looks good on both desktop and mobile sites?