BWAlgorithm

Enumerator options for imageOptimizerOptions.bw.

Constants

• Threshold ("threshold") Uses a luminance threshold to convert the image to black and white.
• Atkinson ("atkinson") Uses Atkinson dithering to convert the image to black and white.

Examples

import { Region, BWAlgorithm } from 'fastly:image-optimizer';

addEventListener("fetch", (event) => event.respondWith(handleRequest(event)));

async function handleRequest(event) {
  return await fetch('https://www.w3.org/Graphics/PNG/text2.png', {
    imageOptimizerOptions: {
      region: Region.UsEast,
      bw: BWAlgorithm.Threshold
    },
    backend: 'w3'
  });
}