Image Manipulation Image Magick

# Image Manipulation with ImageMagick

This skill enables image processing and manipulation tasks using ImageMagick
across Windows, Linux, and macOS systems.

## When to Use This Skill

Use this skill when you need to:

- Resize images (single or batch)
- Get image dimensions and metadata
- Convert between image formats
- Create thumbnails
- Process wallpapers for different screen sizes
- Batch process multiple images with specific criteria

## Prerequisites

- ImageMagick installed on the system
- **Windows**: PowerShell with ImageMagick available as `magick` (or at `C:\Program Files\ImageMagick-*\magick.exe`)
- **Linux/macOS**: Bash with ImageMagick installed via package manager (`apt`, `brew`, etc.)

## Core Capabilities

### 1. Image Information

- Get image dimensions (width x height)
- Retrieve detailed metadata (format, color space, etc.)
- Identify image format

### 2. Image Resizing

- Resize single images
- Batch resize multiple images
- Create thumbnails with specific dimensions
- Maintain aspect ratios

### 3. Batch Processing

- Process images based on dimensions
- Filter and process specific file types
- Apply transformations to multiple files

## Usage Examples

### Example 0: Resolve `magick` executable

**PowerShell (Windows):**
```powershell
# Prefer ImageMagick on PATH
$magick = (Get-Command magick -ErrorAction SilentlyContinue)?.Source

# Fallback: common install pattern under Program Files
if (-not $magick) {
    $magick = Get-ChildItem "C:\\Program Files\\ImageMagick-*\\magick.exe" -ErrorAction SilentlyContinue |
        Select-Object -First 1 -ExpandProperty FullName
}

if (-not $magick) {
    throw "ImageMagick not found. Install it and/or add 'magick' to PATH."
}
```

**Bash (Linux/macOS):**
```bash
# Check if magick is available on PATH
if ! command -v magick &> /dev/null; then
    echo "ImageMagick not found. Install it using your package manager:"
    echo "  Ubuntu/Debian: sudo apt install imagemagick"
    echo "  macOS: brew install imagemagick"
    exit 1
fi
```

### Example 1: Get Image Dimensions

**PowerShell (Windows):**
```powershell
# For a single image
& $magick identify -format "%wx%h" path/to/image.jpg

# For multiple images
Get-ChildItem "path/to/images/*" | ForEach-Object { 
    $dimensions = & $magick identify -format "%f: %wx%h`n" $_.FullName
    Write-Host $dimensions 
}
```

**Bash (Linux/macOS):**
```bash
# For a single image
magick identify -format "%wx%h" path/to/image.jpg

# For multiple images
for img in path/to/images/*; do
    magick identify -format "%f: %wx%h\n" "$img"
done
```

### Example 2: Resize Images

**PowerShell (Windows):**
```powershell
# Resize a single image
& $magick input.jpg -resize 427x240 output.jpg

# Batch resize images
Get-ChildItem "path/to/images/*" | ForEach-Object { 
    & $magick $_.FullName -resize 427x240 "path/to/output/thumb_$($_.Name)"
}
```

**Bash (Linux/macOS):**
```bash
# Resize a single image
magick input.jpg -resize 427x240 output.jpg

# Batch resize images
for img in path/to/images/*; do
    filename=$(basename "$img")
    magick "$img" -resize 427x240 "path/to/output/thumb_$filename"
done
```

### Example 3: Get Detailed Image Information

**PowerShell (Windows):**
```powershell
# Get verbose information about an image
& $magick identify -verbose path/to/image.jpg
```

**Bash (Linux/macOS):**
```bash
# Get verbose information about an image
magick identify -verbose path/to/image.jpg
```

### Example 4: Process Images Based on Dimensions

**PowerShell (Windows):**
```powershe