App Icon Generator
App Icon Generator is a free online tool that turns a single image into complete icon sets for iOS, Android, macOS, watchOS, and the Web. You can customize the corner radius (including an auto mode) and background color, preview every size, and download everything as one ZIP file.
All processing happens locally in your browser — your artwork is never uploaded, and no sign-up is required. It is a quick way for app developers, indie makers, and designers to produce platform-compliant icons before shipping.
How to Use
- Upload an image — a 1024x1024 square PNG works best
- Select the target platforms: iOS, Android, macOS, watchOS, Web
- Adjust the corner radius (auto mode available) and background color if needed
- Click Generate and preview icons at every size
- Download the ZIP containing all generated icons
FAQ
Is the app icon generator free?
Yes, it is completely free with no sign-up and no limit on how many icon sets you generate.
Is my artwork uploaded to a server?
No. Resizing, corner rounding, and ZIP packaging all run locally in your browser, so your image never leaves your device.
What source image should I use?
Use a square image of at least 1024x1024 pixels, ideally PNG. A sufficiently large source keeps every generated size sharp across all platforms.
Do I need to round the corners for iOS myself?
No. iOS applies its own corner mask automatically, so you normally submit square icons. The tool offers an auto corner-radius mode that follows platform conventions, plus a custom 0-100% radius for other uses.