script.js

const gm = require("gm").subClass({ imageMagick: true });
const fs = require("fs");

const images = fs.readdirSync("./images");

images.forEach((image) => {
  gm(`./images/${image}`).write(
    `./prc/${image.slice(0, 11)}.jpg`,
    (err) => {
      if (!err) console.log("✅ done");
    }
  );
});

// gm(`./images/${matnum}`).identify(function (err, data) {
//   if (!err) console.log(data);
// });