![]() ![]() ![]() Most of this is self-obvious, but the last bit, hubble-%d.jpg, looks a bit odd. That command looks like this:Ĭonvert hubble_huge.png -crop 5120x2880 -quality 80% hubble-%d.jpg There are many ways to do auto-cropping, but I just wanted the most basic: For a given input image, create multiple output files using a predefined crop size (5120x2880). ImageMagick has way too many features to describe here (check the partial list on its site), but the one I was interested in was tile cropping, which subdivides one large image into many smaller images. There are a number of ways to install ImageMagick, but I used Homebrew ( brew install imagemagick). If you're not familiar with it, ImageMagick is a set of command-line tools to manipulate images. So this would be that post: How to auto-crop huge images using ImageMagick. These images were automatically cropped from the master image (after I cropped that more detail on what I did is coming in a follow-up post), via ImageMagick. In my recent post A new set of Hubble deep space iMac retina desktops, I included a set of auto-cropped 5120x2880 desktops.
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