Image download, crop and convert to base64 in Nodejs

server.js

const express = require('express')
const imageToBase64 = require('image-to-base64')
const app = express()
const fs = require('fs')
const Axios = require('axios')
const sharp = require('sharp')

app.use(express.json())

app.use((r, res, next) => {
  console.log(r.url)
  next()
})

async function downloadImage(url, filepath) {
  const response = await Axios({
    url,
    method: 'GET',
    responseType: 'stream',
  })
  return new Promise((resolve, reject) => {
    response.data
      .pipe(fs.createWriteStream(filepath))
      .on('error', reject)
      .once('close', () => resolve(filepath))
  })
}

app.get('/', async (req, res) => {
  // Download the given PDF
  await downloadImage(
    `https://zercon.tapcom.com/manage/invoice/149222/print/image/6ba2a8c8-19e4-4192-962e-9cc63a52c2aa/`,
    'downloaded.png'
  )

  // Crop the extra area of the image
  await sharp('./downloaded.png')
    // .resize({ height: 100 })
    // .png()
    .extract({ left: 0, top: 0, width: 630, height: 2200 })
    .toFile('output.png', function (err) {
      // output.jpg is a 300 pixels wide and 200 pixels high image
      // containing a scaled and cropped version of input.jpg
      console.log(err)
      if (!err) {
        imageToBase64('output.png') // Image URL
          .then((response) => {
            //   console.log(response) // "iVBORw0KGgoAAAANSwCAIA..."
            res.status(200).json({
              message: response,
            })
          })
          .catch((error) => {
            console.log(error) // Logs an error if there was one
          })
      }
    })
})

app.post('/', (req, res) => {
  console.log(req.body)
  res.status(200).json({
    message: 'Watch request body on server console.log()',
  })
})

app.listen(3000)