xiangrenya

function extractPartOfImage(img, { x, y, width, height }) {
  const dpi = 2;
  const el = document.createElement("canvas");
  el.width = width * dpi;
  el.height = height * dpi;
  const ctx = el.getContext("2d");
  ctx.drawImage(
    img,
    x * dpi,
    y * dpi,