Mac App Icon Generator
Generate all required macOS app icon sizes from a single source image. Download each size individually or as a complete set.
Runs in your browser. No data leaves your device.
Frequently Asked Questions
How does the Mac App Icon Generator work?
Your source image is drawn onto an HTML Canvas at each required macOS icon size (16px through 1024px). Each canvas applies a rounded-rectangle clipping path using quadraticCurveTo() with Apple's 22.37% corner radius to produce the signature macOS squircle shape. The image is drawn with configurable padding inside the clipped area, and each size is exported as a PNG.
What icon sizes does it generate?
All sizes required by macOS: 16x16, 32x32, 64x64, 128x128, 256x256, 512x512, and 1024x1024 pixels. These cover Finder, Dock, Spotlight, and App Store requirements.
What source image size should I use?
Start with a 1024x1024 pixel image for the best quality. The tool scales it down to each required size. Square images work best since all macOS icons are square.
Can I download all sizes at once?
Yes. Download each size individually or get the complete set. The icons are generated entirely in your browser -- no upload needed.