johansatge/jpeg-autorotate

const jo = require('jpeg-autorotate')
const options = {
  quality: 8,
  jpegjsMaxResolutionInMP: 1234,
}
const path = '/Users/johan/IMG_1234.jpg' // You can use a Buffer too

//
// With a callback:
//
jo.rotate(path, options, (error, buffer, orientation, dimensions, quality) => {
  if (error) {
    console.log('An error occurred when rotating the file: ' + error.message)
    return
  }
  console.log(`Orientation was ${orientation}`)
  console.log(`Dimensions after rotation: ${dimensions.width}x${dimensions.height}`)
  console.log(`Quality: ${quality}`)
  // ...Do whatever you need with the resulting buffer...
})

//
// With a Promise:
//
jo.rotate(path, options)
  .then(({buffer, orientation, dimensions, quality}) => {
    console.log(`Orientation was ${orientation}`)
    console.log(`Dimensions after rotation: ${dimensions.width}x${dimensions.height}`)
    console.log(`Quality: ${quality}`)
    // ...Do whatever you need with the resulting buffer...
  })
  .catch((error) => {
    console.log('An error occurred when rotating the file: ' + error.message)
  })

const jo = require('jpeg-autorotate')

jo.errors.read_file // File could not be opened
jo.errors.read_exif // EXIF data could not be read
jo.errors.no_orientation // No orientation tag was found
jo.errors.unknown_orientation // The orientation tag is unknown
jo.errors.correct_orientation // The image orientation is already correct
jo.errors.rotate_file // An error occurred when rotating the image

const jo = require('jpeg-autorotate')
jo.rotate('/image.jpg')
  .catch((error) => {
    if (error.code === jo.errors.correct_orientation) {
      console.log('The orientation of this image is already correct!')
    }
  })

import piexif from 'piexifjs'

function deleteThumbnailFromExif(imageBuffer) {
  const imageString = imageBuffer.toString('binary')
  const exifObj = piexif.load(imageString)
  delete exifObj['thumbnail']
  delete exifObj['1st']
  const exifBytes = piexif.dump(exifObj)
  return Buffer.from(piexif.insert(exifBytes, imageString), 'binary')
}