SharpPad: Command for Claude Code

Convert the PNG file at $ARGUMENTS to both ICO and ICNS formats suitable for Windows and macOS applications.

This command will:

1. Create a Windows ICO file with multiple icon sizes (16x16, 32x32, 48x48, 64x64, 128x128, 256x256)
2. Create a macOS ICNS file with all standard resolutions including Retina variants
3. Clean up temporary files

The converted files will be created in the same directory as the source PNG file.

Usage: /png-to-icons path/to/your/file.png

Manual Steps (if command fails)

1. Create ICNS file (macOS format)

# Navigate to the directory containing your PNG file
cd "path/to/your/assets"

# Create iconset directory
mkdir -p favicon.iconset

# Generate all required icon sizes
sips -z 16 16 favicon.png --out favicon.iconset/icon_16x16.png
sips -z 32 32 favicon.png --out favicon.iconset/[email protected]
sips -z 32 32 favicon.png --out favicon.iconset/icon_32x32.png
sips -z 64 64 favicon.png --out favicon.iconset/[email protected]
sips -z 128 128 favicon.png --out favicon.iconset/icon_128x128.png
sips -z 256 256 favicon.png --out favicon.iconset/[email protected]
sips -z 256 256 favicon.png --out favicon.iconset/icon_256x256.png
sips -z 512 512 favicon.png --out favicon.iconset/[email protected]
sips -z 512 512 favicon.png --out favicon.iconset/icon_512x512.png
sips -z 1024 1024 favicon.png --out favicon.iconset/[email protected]

# Convert iconset to ICNS
iconutil -c icns favicon.iconset

# Clean up temporary directory
rm -rf favicon.iconset

2. Create ICO file (Windows format)

Method A: Using Python with PIL/Pillow (recommended)

#!/usr/bin/env python3
from PIL import Image
import os

def create_ico(png_path, ico_path):
    img = Image.open(png_path)
    sizes = [16, 32, 48, 64, 128, 256]
    icons = []
    
    for size in sizes:
        resized = img.resize((size, size), Image.Resampling.LANCZOS)
        icons.append(resized)
    
    icons[0].save(ico_path, format='ICO', sizes=[(size, size) for size in sizes])
    print(f"Successfully created {ico_path}")

# Usage
create_ico("favicon.png", "favicon.ico")