Download all custom backgrounds from google meet

download-meet-backgrounds.js

const db = await new Promise((resolve, reject) => {
  const request = window.indexedDB.open("meet_fx_db");
  request.onerror = event => {
    reject("req fail");
  };
  request.onsuccess = event => {
    resolve(event.target.result);
  };
});

let i = 0;

db.transaction("meet_fx_store").objectStore("meet_fx_store").openCursor().onsuccess = event => {
  const cursor = event.target.result;
  if (!cursor) {
    console.log("No more entries!");
    return;
  }
  console.log(`Processing key: ${cursor.key}`);
  const {
    data: { imageFileBlob, timestampMs },
  } = cursor.value;

  // NOTE: delay to let chrome process files easily
  setTimeout(() => {
    const link = document.createElement("a");
    link.href = URL.createObjectURL(imageFileBlob);
    link.download = `${timestampMs}.png`;

    document.body.appendChild(link);

    link.click();
  }, i++ * 500);

  cursor.continue();
};