App Icon Maker: Generating All Required Sizes from One Source
Modern apps need icons in dozens of sizes β iOS, Android, Windows, web manifests, app stores. Generating each one by hand is tedious and error-prone. An icon maker takes one square source and outputs every required size with proper naming.
App icons appear at different sizes on different devices and contexts: iOS Settings (29Γ29), iPhone home screen (120Γ120), iPad Pro home screen (167Γ167), App Store (1024Γ1024), Android (48 to 192), and so on. Apple's full asset catalog has 14+ size variants alone.
An icon maker takes one high-resolution square source β typically 1024Γ1024 β and resamples it to every required size, producing a folder structure that drops directly into Xcode or Android Studio.
Design tips for app icons
- β’Start with a 1024Γ1024 source. Apple's App Store requires this exact size for submission.
- β’Use a flat color palette with 2β3 colors β busy icons look noisy at small sizes.
- β’iOS rounds corners automatically β design a square; let iOS apply the corner radius.
- β’Avoid text, especially small text. Logos work better than wordmarks at app-icon sizes.
- β’Test at 60Γ60 (iPhone home screen size) β if it's unrecognizable, simplify.
Extended FAQ
What's the difference between iOS and Android icons?
iOS uses square icons that the system rounds. Android can use square or non-square 'adaptive icons' that the launcher composes with a background. EllyTools generates both formats.
Do I need 1024Γ1024 specifically?
Yes for App Store submission. For everything else, any high-resolution square works β but 1024 is the safest starting size.
Are my icons stored?
No β runs entirely in your browser.