ImageMagick — Command-Line Image Processing

Overview

ImageMagick 7 (current release 7.1.2) is driven by one executable, magick. The old convert, mogrify, identify, compare, montage and composite commands still exist as legacy names in version 6; in 7 call them as magick mogrify, magick identify, magick compare, magick montage. Options are applied left to right, so order matters: settings such as -density must come before the file they affect.

Instructions

Install

brew install imagemagick        # macOS
sudo apt install imagemagick    # Debian/Ubuntu (may still ship 6.x: then use `convert`, `identify`)
magick -version                 # confirm 7.x and the delegates (webp, heic, rsvg)

Basic operations