One tool I’ve been using to optimize images is sharp.

import sharp from 'sharp'

Here’s how I used it to convert images to webp:

await sharp('image.png')
  .png({ lossless: true })
  .toFile('image.png')

It can do a lot more image processing stuff like rotate resize etc.

Lessons in this unit:

0:	Introduction
1:	How to create and save an image with Node.js and Canvas
2:	How to download an image from URL in Node
3:	How to download and save an image using Node.js
4:	How to get an image width and height using Node
5:	How to turn an image into a data URI string
6:	How to download an image using Node.js
7:	How to print a canvas to a data URL
8:	▶︎ Optimize images from a Node.js script
9:	Calling the ImageOptim macOS app from a Node.js script