This is a bookmarklet shows only images in a modelpress page, for example https://mdpr.jp/photo/detail/8869191.

main.js

function () {
  const _d = document;
  const imgElemList = _d.querySelectorAll('ol.pg-photo__webImageList a img');
  if (imgElemList.length == 0) {
    alert('Images not found.');
    return;
  }
  imgElemList.forEach((e, i) => {
    let imgSrc = e.getAttribute('src');
    imgSrc = imgSrc.slice(0, imgSrc.indexOf('?'));
    _d.write(`<img src="${imgSrc}">`);
  });
  _d.close();
}

show_only_images_in_modelpress

javascript: (function () {
  const _d = document;
  const imgElemList = _d.querySelectorAll('ol.pg-photo__webImageList a img');
  if (imgElemList.length == 0) {
    alert('Images not found.');
    return;
  }
  imgElemList.forEach((e, i) => {
    let imgSrc = e.getAttribute('src');
    imgSrc = imgSrc.slice(0, imgSrc.indexOf('?'));
    _d.write(`<img src="${imgSrc}">`);
  });
  _d.close();
})()