image-resize.js

import "@johnlindquist/kit"
    
// Menu: Resize an Image
// Description: Select an image in Finder. Type option + i to resize it.
// Shortcut:

let sharp = await npm("sharp")

let imagePath = await getSelectedFile()

let width = Number(await arg("Enter width:"))

let metadata = await sharp(imagePath).metadata()

let newHeight = Math.floor(
  metadata.height * (width / metadata.width)
)

let lastDot = /.(?!.*\.)/
let resizedImageName = imagePath.replace(
  lastDot,
  `-${width}.`
)

await sharp(imagePath)
  .resize(width, newHeight)
  .toFile(resizedImageName)