This is a small JS script that automatically downloads all the images in a WhatsApp conversation

download_whatsapp_images.js

// Script to download images from WhatsApp
//
// Steps to use:
// 1. Open up the conversation you want to download pics from
// 2. Open the leftmost image you want to download (the script
//    will download and advance to the next image until the last
//    image is reached.
// 3. Open the developer console and paste the script in it
// 4. Click OK on the "Download multiple files" browser prompt
//    (if it appears)
//
// Tested in Chrome 124

(function () {
  var dlTimeout = 1500;
  var nextTimeout = 100;
  var maxDownloads = 1306;
  var downloadCount = 1;
  var downloadMenu = document.querySelector('div[aria-label="Menu"]');

  var download = function () {
    if (downloadMenu) {
      downloadMenu.click();
    }

    setTimeout(() => {
      try {
        var downloadBtn = document.querySelector('div[aria-label="Download"]');
        var nextBtn = document.querySelector('div[aria-label="Next"]');

        // console.log(downloadBtn, nextBtn);

        if (downloadBtn) {
          downloadBtn.click();

          setTimeout(() => {
            nextBtn.click();

            console.log("downloadCount: = " + downloadCount);
            downloadCount += 1;
            if (downloadCount <= maxDownloads) {
              download();
            }
          }, nextTimeout);
        } else {
          // if download button not available, continue with previous photo...
          nextBtn.click();
          download();
        }
      } catch (ex) {
        console.error(ex);

        var nextBtn = document.querySelector('div[aria-label="Next"]');
        nextBtn.click();
      }
    }, dlTimeout);
  };

  download();
})();

@z3nth10n Thanks! I've updated the gist based on your proposal.