One of the images required for the AppIcon Xcode assest file is an 83.5pt image for the iPad Pro. How do you translate the image size from 83.5pt to pixels? Isn't one pt equal to one pixel? How do I create an 83.5x83.5 size image in pixels? That's not possible.
iPad Pro app icon
From the iOS HIGS:
https://developer.apple.com/ios/human-interface-guidelines/graphics/app-icon/
App Icon Sizes
Every app must supply both small and large app icons.
Small icons are used on the Home screen and throughout the system once your app is installed.
Provide different sized small icons for different devices. Make sure that your app icon looks great on all the devices you support.
- iPhone 6s Plus, iPhone 6 Plus - 180px by 180px
- iPhone 6s, iPhone 6, iPhone SE - 120px by 120px
- iPad Pro - 167px by 167px
- iPad, iPad mini - 152px by 152px