Goimg

A simple Golang image resizing command line utility, based on Libvips and Bimg.

Building

Make sure you have Libvips installed. Then simply clone this repo and run:

go get
go install

Usage

The following command will download the original file at the specified url, and will produce the following 4 thumbnails:

• /tmp/sierra-original.jpg
• /tmp/sierra-big.jpg
• /tmp/sierra-regular.jpg
• /tmp/sierra-small.jpg

goimg url https://cdn-images-1.medium.com/max/2000/1*4BPoUrWcf67bdaKyZPARMg.png /tmp sierra jpg big,regular,small 

Presets

Goimg comes with the following thumbnail size presets:

sizes := map[string]int{
  "large":   1024,
  "big":     800,
  "regular": 480,
  "small":   320,
  "tiny":    128,
}

Goimg uses Libvips smartcrop in order to normalize aspect ratios that are bigger than 16:9. For smaller aspect ratios, the original value is kept.

Related projects

• Libvips: https://github.com/jcupitt/libvips
• Bimg: https://github.com/h2non/bimg
• Imaginary: https://github.com/h2non/imaginary