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iOS Simulator utility commands for screenshots, resizing, and common operations. Use these commands when taking simulator screenshots, resizing images for API compatibility, or performing common simulator operations.
npx skill4agent add vabole/apple-skills simulator-utils# Single command: screenshot + resize
xcrun simctl io booted screenshot /path/to/screenshot.png && sips --resampleHeightWidthMax 1800 /path/to/screenshot.pngsips --resampleHeightWidthMax 1800# Single file
sips --resampleHeightWidthMax 1800 /path/to/screenshot.png
# Multiple files
sips --resampleHeightWidthMax 1800 /path/to/*.png
# Batch resize all PNGs in directory
for f in /path/to/dir/*.png; do sips --resampleHeightWidthMax 1800 "$f"; done# List available simulators
xcrun simctl list devices available
# Boot specific device (prefer iPhone 17)
xcrun simctl boot "iPhone 17"
# Shutdown simulator
xcrun simctl shutdown booted
# Erase simulator (fresh state)
xcrun simctl erase "iPhone 17"
# Check booted device
xcrun simctl list devices | grep Booted# Install app
xcrun simctl install booted /path/to/App.app
# Launch app
xcrun simctl launch booted com.bundle.identifier
# Terminate app
xcrun simctl terminate booted com.bundle.identifier
# Uninstall app
xcrun simctl uninstall booted com.bundle.identifier# Basic screenshot (NOT recommended - use resize pattern above)
xcrun simctl io booted screenshot /path/to/screenshot.png
# Screenshot with resize (RECOMMENDED)
xcrun simctl io booted screenshot /path/to/screenshot.png && sips --resampleHeightWidthMax 1800 /path/to/screenshot.png
# Screenshot to clipboard
xcrun simctl io booted screenshot - | pbcopy# Start recording
xcrun simctl io booted recordVideo /path/to/video.mov
# Stop recording: Ctrl+C# Build for simulator
xcodebuild -scheme SCHEME -project /path/to/Project.xcodeproj -destination 'platform=iOS Simulator,name=iPhone 17' build
# Build with output filtering (cleaner)
xcodebuild -scheme SCHEME -project /path/to/Project.xcodeproj -destination 'platform=iOS Simulator,name=iPhone 17' build 2>&1 | grep -E "(error:|warning:|BUILD)"
# Find built .app path
find ~/Library/Developer/Xcode/DerivedData -name "*.app" -path "*/Debug-iphonesimulator/*" -type d 2>/dev/null | head -1# 1. Build
xcodebuild -scheme SCHEME -project /path/to/Project.xcodeproj -destination 'platform=iOS Simulator,name=iPhone 17' build 2>&1 | grep -E "(error:|BUILD)"
# 2. Terminate existing instance (ignore errors)
xcrun simctl terminate booted com.bundle.identifier 2>/dev/null
# 3. Install
xcrun simctl install booted "/path/to/App.app"
# 4. Launch
xcrun simctl launch booted com.bundle.identifier
# 5. Wait for app to load
sleep 2
# 6. Screenshot with resize
xcrun simctl io booted screenshot /path/to/screenshot.png && sips --resampleHeightWidthMax 1800 /path/to/screenshot.pngsips# Resize to max dimension (maintains aspect ratio)
sips --resampleHeightWidthMax 1800 image.png
# Resize to specific width
sips --resampleWidth 1000 image.png
# Resize to specific height
sips --resampleHeight 1000 image.png
# Get image dimensions
sips -g pixelWidth -g pixelHeight image.png
# Convert format
sips -s format jpeg image.png --out image.jpg
# Batch resize
sips --resampleHeightWidthMax 1800 *.pngxcrun simctl boot "iPhone 17"sips --resampleHeightWidthMax 1800 /path/to/screenshot.png# Check bundle ID
xcrun simctl listapps booted | grep -A5 "CFBundleIdentifier"
# Reinstall
xcrun simctl uninstall booted com.bundle.identifier
xcrun simctl install booted /path/to/App.appxcrun simctl shutdown all
xcrun simctl erase all
xcrun simctl boot "iPhone 17"