imagemagick

name	imagemagick
description	ImageMagick commands for image conversion, resizing, cropping, and batch processing. Use when user mentions "imagemagick", "convert image", "resize image", "crop image", "image format", "batch resize", "thumbnail", "watermark", "image manipulation", "magick", "mogrify", or processing images from the command line.

ImageMagick Commands

ImageMagick v7 uses magick as the main command. On older systems (v6), use convert, mogrify, identify, montage directly.

Image Info

# Dimensions, format, colorspace, filesize
magick identify image.png
magick identify -verbose image.png

# Just dimensions
magick identify -format "%wx%h" image.png

# Format, dimensions, filesize, colorspace in one line
magick identify -format "Format: %m, Size: %wx%h, Filesize: %b, Colorspace: %[colorspace]\n" image.png

# List all images in a directory
magick identify *.jpg

Convert Between Formats

magick input.png output.jpg
magick input.jpg output.webp
magick input.png output.gif
magick input.svg output.png
magick input.png output.pdf
magick input.webp output.png

# Explicit format override (when extension is ambiguous)
magick PNG:input output.jpg

Resize

# Resize to exact width x height (may distort)
magick input.png -resize 800x600! output.png

# Resize to fit within bounds (preserves aspect ratio)
magick input.png -resize 800x600 output.png

# Resize by width only (height scales proportionally)
magick input.png -resize 800x output.png


magick input.png -resize x600 output.png


magick input.png -resize 50% output.png


magick input.png -resize 800x600\> output.png


magick input.png -resize 800x600\< output.png


magick input.png -resize 800x600^ -gravity center -extent 800x600 output.png