Get all reactions as portraits from Telegram

console.js

function getBase64Image(img) {
  var canvas = document.createElement("canvas");
  canvas.width = img.naturalWidth;
  canvas.height = img.naturalHeight;
  var ctx = canvas.getContext("2d");
  ctx.drawImage(img, 0, 0);
  var dataURL = canvas.toDataURL("image/png");
  return dataURL.replace(/^data:image\/(png|jpg);base64,/, "");
}

els = Array.from(
  document.querySelector(
    "html.notranslate.theme-dark body#root.ThfRMqwq.is-pointer-env.is-macos div#portals div div.Modal.ReactorListModal.narrow.opacity-transition.fast.shown.open div.modal-container div.modal-dialog div.modal-content.custom-scroll div.reactor-list-wrapper div.reactor-list.custom-scroll"
  ).childNodes
).filter(s => s.querySelector);

html2 =
  "<div style='display: inline-flex; flex-wrap: wrap; gap: 8px'>" +
  els
    .sort(
      (a, b) =>
        a
          .querySelector(".fullName")
          .innerText?.localeCompare(b.querySelector(".fullName").innerText) || 0
    )
    .map(
      e =>
        "<a href='https://web.telegram.org/a/#" +
        e.querySelector("[data-peer-id]").getAttribute("data-peer-id") +
        "' target='_blank' style='display: inline-flex; flex-direction: column; gap: 4px; border: 1px solid black; padding: 4px; border-radius: 4px;'><img src='data:image/jpeg;base64," +
        getBase64Image(e.querySelector("img")) +
        "'/><span>" +
        e.querySelector(".fullName").innerText +
        "</span></a>"
    )
    .join("\n") +
  "</div>";

var ww = window.open("");
ww.document.write(html2);

Open post => Reactions as popup and execute in the console this script. It will open a new window with portraits, links and names.