abdullah4ai/asset-management
swiftship/internal/skills/data/features/asset-management/SKILL.md
Manage Xcode project assets including app icons, images, and asset catalogs. Use when handling app icon installation, image asset creation, or asset catalog modifications.
$ install --global
skillsauthnpx skillsauth add abdullah4ai/apple-developer-toolkit asset-managementInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Last scanned: Mar 30, 2026, 4:45 AM36.9s1 file scanned
SKILL.md
- name:
- asset-management
- description:
- Manage Xcode project assets including app icons, images, and asset catalogs. Use when handling app icon installation, image asset creation, or asset catalog modifications.
Asset Management
Asset Catalog Structure
Xcode projects use .xcassets bundles containing named asset sets:
Assets.xcassets/
Contents.json # Root catalog manifest
AppIcon.appiconset/
Contents.json # Icon set manifest with image references
AppIcon.png # The actual icon file
AccentColor.colorset/
Contents.json # Color set manifest
App Icon Requirements by Platform
All platforms require a single high-resolution icon. Xcode generates all needed sizes automatically.
| Platform | Size | Idiom | Platform Key | |----------|------|-------|-------------| | iOS | 1024x1024 | universal | ios | | watchOS | 1024x1024 | universal | watchos | | tvOS | 1280x768 | tv | tvos | | macOS | 1024x1024 | mac | (none) | | visionOS | 1024x1024 | universal | xros |
Contents.json Format
iOS example:
{
"images": [
{
"filename": "AppIcon.png",
"idiom": "universal",
"platform": "ios",
"size": "1024x1024"
}
],
"info": {
"version": 1,
"author": "xcode"
}
}
macOS uses "idiom": "mac" with "scale": "1x" and no "platform" key.
Image Processing with sips
macOS includes sips (scriptable image processing system) for image manipulation:
# Query dimensions
sips -g pixelWidth -g pixelHeight image.png
# Resize to exact dimensions
sips -z 1024 1024 image.png
# Convert format to PNG
sips --setProperty format png image.jpg --out image.png
# Resize and convert in one step
sips -z 1024 1024 --setProperty format png input.jpg --out output.png
Verifying Icon Installation
To verify an icon is correctly installed:
- Check
AppIcon.appiconset/Contents.jsonhas afilenameentry - Verify the referenced file exists in the same directory
- Confirm dimensions match the platform requirement using
sips -g pixelWidth -g pixelHeight - Build the project to verify Xcode accepts the icon
Finding the Asset Catalog
Search for the asset catalog in the project:
find . -name "AppIcon.appiconset" -not -path "*/DerivedData/*" -not -path "*/.build/*"
Or use Glob: **/AppIcon.appiconset/
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