App Store Asset Studio
App icons, framed screenshots and header graphics, made from your SVG and screenshots, all in your browser. Nothing is uploaded anywhere.
iOS · iPhone
iPadOS · iPad
App Store
macOS
The zip contains AppIcon.appiconset/ with all PNGs and a Contents.json. Drag the folder into your Assets.xcassets. The SVG you load here is also used as the logo on the Header Graphic tab.
Framed screenshots
Add screenshots to see them in a device frame.
Preview
The phones are meant to run off the bottom edge. Use the sliders to choose how much of them shows.