Opening images on NodeJS and finding out width/height

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Using imagemagick for this is very overkill since you only want to read the header of the file and check the dimensions. image-size is a pure javascript implementation of said feature which is very easy to use.

https://github.com/image-size/image-size

var sizeOf = require('image-size')

sizeOf('images/funny-cats.png', function (err, dimensions) {
  if (err) throw err

  console.log(dimensions.width, dimensions.height)
})

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