Kopiuj tabelę jako TSV

(function () {
  var grid = document.querySelector('[role="grid"], [role="table"], table');
  if (!grid) { alert('No table found on the page.'); return; }
  var lines = [];
  grid.querySelectorAll('[role="row"], tr').forEach(function (r) {
    var cells = r.querySelectorAll('[role="columnheader"], [role="cell"], [role="gridcell"], th, td');
    if (!cells.length) return;
    var row = [].map.call(cells, function (c) {
      return (c.textContent || '').trim().replace(/\s+/g, ' ');
    });
    lines.push(row.join('\t'));
  });
  if (!lines.length) { alert('Table has no rows.'); return; }
  navigator.clipboard.writeText(lines.join('\n')).then(function () {
    alert('Copied ' + lines.length + ' rows as TSV. Paste into a spreadsheet.');
  });
})();