output -resize 900 -quality 80 -format jpg *.jpg output -resize 180 -format jpg *.*Ĭonvert all jpgs in a directory to same size, reduce their quality, and output as jpg. This will take a long time and, while it is working, it will output a lot of text to the terminal window.
Imagemagick commands install#
cropped *.pngĬonvert all files in a directory to the same width and reformat to jpg mkdir output To install Imagemagick, use the MacPorts port command: sudo port install ImageMagick The port command downloads ImageMagick and its prerequiite libraries, then configures, builds, and installs ImageMagick. The format is -crop x_size x y_size + x_offset + y_offset.
However, it can only be accessed through the command line, a cron job or PHP code on a web page. By default, ImageMagick is installed on InMotion Hosting servers. convert input.png -crop 1900x1800+300+100 output.png Processing multiple filesĬrop multiple files. To use ImageMagick with InMotion Hosting servers, you will need to use PHP or execute a command in SSH.
Reduce the quality of a jpg convert big_image.jpg -strip -quality 90 small_image.jpgĬompress a pdf, resize it, and increase the contrast by stretching the range of intensity values convert big_pdf.pdf -contrast-stretch 1x1% -resize 20% -compress Group4 small_pdf.pdfĬrop a single image to a specific format. Did I mention that imagemagick is free?Īnother advantage is ImageMagick’s unparalleled ability to read more than 100 image file formats and easily convert one into the other.īelow, I keep a running list of all commands I ever needed, so I don’t have to google them again. While your Adobe Creative Cloud Suite might be capable of doing all the same things, ImageMagick has all the benefits of a command-line tool, namely better reproducibility, and efficiency when converting lots of images. Most are not included in Anthony Thyssens extensive Examples pages. It is my go-to command-line tool for converting, modifying, and editing images. They are expressed in command line format and may involve the use of Unix commands as well. ImageMagick is a free and open-source software suite for image editing.