App Icon Maker: Generating All Required Sizes from One Source
Modern apps need icons in dozens of sizes — 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 (29×29), iPhone home screen (120×120), iPad Pro home screen (167×167), App Store (1024×1024), 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 — typically 1024×1024 — and resamples it to every required size, producing a folder structure that drops directly into Xcode or Android Studio.
Design tips for app icons
- •Start with a 1024×1024 source. Apple's App Store requires this exact size for submission.
- •Use a flat color palette with 2–3 colors — busy icons look noisy at small sizes.
- •iOS rounds corners automatically — design a square; let iOS apply the corner radius.
- •Avoid text, especially small text. Logos work better than wordmarks at app-icon sizes.
- •Test at 60×60 (iPhone home screen size) — 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 1024×1024 specifically?
Yes for App Store submission. For everything else, any high-resolution square works — but 1024 is the safest starting size.
Are my icons stored?
No — runs entirely in your browser.