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Category Dev Generators

App Icon Workflow

Upload a 1024x1024 square image. We generate the Xcode asset catalog instantly.

Drag & Drop or Click to Upload

Recommended: 1024x1024 PNG (No Transparency)

Processing Assets...

Fill Transparent Background

If your icon has transparency, we will fill the background with white to prevent App Store rejection.

Contextual Preview

Home Screen (iPhone)

MyApp

Settings List

Notifications

›

App Store

Your App Name

Utilities

GET

Asset Manifest

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About

This tool addresses a critical friction point in the iOS development lifecycle: the rigid asset requirements of Xcode. Apple mandates that every application binary includes an AppIcon.appiconset folder containing roughly 15-20 specific image variants, accompanied by a strictly formatted Contents.json manifest.

Failure to provide exact resolutions (e.g., 29pt × 3x) or correct semantic definitions results in build errors or App Store rejection. Furthermore, iOS applies a continuous curvature mask (the "squircle") at runtime. This tool solves these problems by performing high-fidelity Lanczos-like downsampling and automatically generating the required JSON manifest, ensuring a drag-and-drop integration into your Xcode project.

Formulas

The generator uses a coordinate scaling function to map the source vector space S to the target raster space T. The pixel dimension d is calculated as:

d = size × scale

Where size is the point value (e.g., 60pt) and scale is the display density factor (e.g., 3x for Super Retina displays). The file size estimation E for an uncompressed RGBA bitmap is:

w × h × 4 bytes1024

Resulting in kB.

Reference Data

Idiom	Role	Size (pt)	Scale	Pixels (px)	Usage
iPhone	Notification	20	2x, 3x	40x40, 60x60	Notification Shade
iPhone	Settings	29	2x, 3x	58x58, 87x87	Settings App
iPhone	Spotlight	40	2x, 3x	80x80, 120x120	Search Results
iPhone	App	60	2x, 3x	120x120, 180x180	Home Screen
iPad	Notification	20	1x, 2x	20x20, 40x40	Notification Shade
iPad	Settings	29	1x, 2x	29x29, 58x58	Settings App
iPad	Spotlight	40	1x, 2x	40x40, 80x80	Search Results
iPad	App	76	1x, 2x	76x76, 152x152	Home Screen
iPad	Pro App	83.5	2x	167x167	iPad Pro 12.9"
iOS-Marketing	App Store	1024	1x	1024x1024	App Store

Frequently Asked Questions

This is a common error caused by transparency. Apple's strict validation requires the 1024x1024 marketing icon to be opaque (no alpha channel). If your PNG has transparency, the App Store connects the transparent pixels to black. This tool automatically composites your icon over a white background if transparency is detected, or you can ensure your source image is fully opaque.

You should strictly use a 1024x1024 pixel PNG or JPG. While 512x512 might upscale for smaller devices, the App Store requires a 1024pt source. Using a smaller image will result in significant aliasing and rejection during the archive upload process.

Yes. The generated ZIP file contains a folder named "AppIcon.appiconset". Inside, you will find both the resized image assets and the correctly formatted "Contents.json" file that Xcode uses to map images to device idioms. You can replace your existing folder in "Assets.xcassets" directly.

No. Apple applies the corner masking (squircle) dynamically at the operating system level. You must upload a full square image. If you pre-round the corners, you will likely see white or black artifacts in the corners where the OS mask and your pre-mask do not align perfectly.