npm

graphicsmagick

Collection of tools and libraries for image processing and manipulation

brewmacoslinux
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Source

About

Image processing tools collection

Commands

gm

Examples

Convert an image from one format to another$ gm convert input.jpg output.png
Resize an image to specific dimensions$ gm convert input.jpg -resize 800x600 output.jpg
Create a thumbnail with quality adjustment$ gm convert input.jpg -thumbnail 100x100 -quality 85 thumb.jpg