Exportar una playlist de Spotify a CSV o texto

// Responsive Muse · Spotify Playlist Exporter · v1.0 · 2026-10-23
// Saves any Spotify playlist, album or your Liked Songs that you can open on open.spotify.com
// to CSV or TXT: title, artists, album, date added, duration and link. Useful to back up a
// playlist or move it to Apple Music, YouTube Music or Tidal. Long playlists load while the
// script scrolls. It makes no network requests of its own and never reads cookies,
// passwords or tokens.
(async () => {
  const TOOL = 'Exportar playlist de Spotify';
  const FORMAT = 'csv';        // 'csv' (Excel, Sheets, playlist converters) or 'txt' ("Artist - Title", one per line)

  if (location.hostname !== 'open.spotify.com' || !/\/(playlist|album|collection\/tracks)\b/.test(location.pathname)) {
    alert('Abre primero una playlist, un álbum o tus Canciones que te gustan en Spotify para la web, por ejemplo:\nhttps://open.spotify.com/collection/tracks');
    return;
  }
  // A small box on the page shows progress and asks before changing anything,
  // so you never need to read or edit the console.
  const many = (n, word) => `${n} ${n === 1 ? word : ({ canal: 'canales', 'canción': 'canciones', 'publicación': 'publicaciones', 'elemento guardado': 'elementos guardados' })[word] || word + 's'}`;   // 1 vídeo, 2 vídeos
  const panel = (() => {
    const box = document.createElement('div');
    box.style.cssText = 'position:fixed;right:16px;bottom:16px;z-index:2147483647;width:340px;max-width:calc(100vw - 32px);' +
      'background:#111318;color:#e6e8ee;font:14px/1.5 system-ui,sans-serif;border-radius:12px;padding:16px;' +
      'box-shadow:0 8px 30px rgba(0,0,0,.4);text-align:left';
    const head = document.createElement('strong');
    head.textContent = TOOL;
    const msg = document.createElement('p');
    msg.style.cssText = 'margin:8px 0 12px;white-space:pre-line';
    const row = document.createElement('div');
    row.style.cssText = 'display:flex;flex-wrap:wrap;gap:8px;justify-content:flex-end';
    box.append(head, msg, row);
    document.body.append(box);
    const button = (label, primary, onClick) => {
      const b = document.createElement('button');
      b.textContent = label;
      b.style.cssText = 'font:600 14px system-ui,sans-serif;padding:8px 14px;border-radius:8px;cursor:pointer;' +
        (primary ? 'background:#0f766e;color:#fff;border:1px solid #0f766e' : 'background:none;color:#e6e8ee;border:1px solid #3a3f4b');
      b.onclick = onClick;
      row.append(b);
    };
    return {
      text(t) { msg.textContent = t; },
      ask(t, yes) {
        msg.textContent = t;
        row.replaceChildren();
        return new Promise(r => {
          button('Cancelar', false, () => { row.replaceChildren(); r(false); });
          button(yes, true, () => { row.replaceChildren(); r(true); });
        });
      },
      stoppable(onStop) { row.replaceChildren(); button('Parar', false, onStop); },
      actions(t, list) {
        msg.textContent = t;
        row.replaceChildren();
        list.forEach(([label, primary, run]) => button(label, primary, run));
      },
      finish(t) { this.actions(t, [['Cerrar', true, () => box.remove()]]); },
      close() { box.remove(); },
    };
  })();
  // Offer the result as a downloaded file or as clipboard text (a real click, so it always works)
  const deliver = (summary, body, file) => {
    const save = () => {
      const a = document.createElement('a');
      a.href = URL.createObjectURL(new Blob([/\.csv$/.test(file) ? '\ufeff' + body : body], { type: 'text/plain;charset=utf-8' }));
      a.download = file;
      a.click();
      setTimeout(() => URL.revokeObjectURL(a.href), 5000);
      panel.text(`${summary}\nGuardado como ${file} (mira tu carpeta de Descargas).`);
    };
    const copy = () => navigator.clipboard.writeText(body)
      .then(() => panel.text(`${summary}\nCopiado. Pégalo en una hoja de cálculo o en una nota.`))
      .catch(() => panel.text(`${summary}\nEl navegador ha bloqueado el portapapeles: usa Descargar.`));
    panel.actions(summary, [['Cerrar', false, () => panel.close()], ['Copiar', false, copy], ['Descargar', true, save]]);
  };
  const sleep = ms => new Promise(r => setTimeout(r, ms));
  const tracks = new Map();
  const clean = s => (s || '').replace(/\s+/g, ' ').trim();
  // Links on the page carry the language (/intl-es/track/…): keep only the ID
  const link = href => href ? 'https://open.spotify.com/' + href.replace(/^.*?\/(track|episode)\//, '$1/').split('?')[0] : '';

  // Spotify scrolls an inner panel, not the window
  const first = document.querySelector('[data-testid="tracklist-row"]');
  let scroller = first;
  while (scroller && !(scroller.scrollHeight > scroller.clientHeight + 50 && /auto|scroll/.test(getComputedStyle(scroller).overflowY))) {
    scroller = scroller.parentElement;
  }
  scroller = scroller || document.scrollingElement;
  const grid = first?.closest('[aria-rowcount]');   // the playlist's own list (the sidebar library is another grid)
  const expected = grid ? Number(grid.getAttribute('aria-rowcount')) - 1 : 0;   // minus the header row
  const heading = clean(document.querySelector('[data-testid="entityTitle"]')?.textContent);
  const pageAlbum = /\/album\//.test(location.pathname) ? heading : '';   // album pages don't link the album in each row

  // Read the songs currently on screen (rows are recycled while scrolling: key = row number)
  const collect = () => {
    for (const row of document.querySelectorAll('[data-testid="tracklist-row"]')) {
      const n = Number(row.closest('[aria-rowindex]')?.getAttribute('aria-rowindex')) - 1;
      const a = row.querySelector('a[href*="/track/"], a[href*="/episode/"]');
      if (!a || !(n > 0) || tracks.has(n)) continue;
      const cells = [...row.querySelectorAll('[role="gridcell"]')];
      const added = cells.find(c => !c.querySelector('a, button, img') && !/^\d+$|^\d+:\d\d(:\d\d)?$/.test(clean(c.textContent)));
      const duration = cells.map(c => clean(c.textContent)).reverse().find(t => /^\d+:\d\d(:\d\d)?$/.test(t)) || '';
      tracks.set(n, {
        n,
        title: clean(a.textContent),
        artist: [...row.querySelectorAll('a[href*="/artist/"], a[href*="/show/"]')].map(x => clean(x.textContent)).join(', '),
        album: clean(row.querySelector('a[href*="/album/"]')?.textContent) || pageAlbum,
        added: clean(added?.textContent),
        duration,
        url: link(a.getAttribute('href')),
      });
    }
  };

  // 1. Scroll to the end, collecting as we go, until nothing new appears three times in a row
  let stop = false;
  panel.stoppable(() => { stop = true; });
  scroller.scrollTo(0, 0);
  await sleep(800);
  let idle = 0;
  while (idle < 3 && !stop && !(expected && tracks.size >= expected)) {
    const before = tracks.size;
    collect();
    scroller.scrollBy(0, scroller.clientHeight * 0.8);
    await sleep(900);
    collect();
    idle = tracks.size === before ? idle + 1 : 0;
    panel.text(`Recogiendo canciones… ${tracks.size}${expected ? ' de ' + expected : ''}`);
  }
  const list = [...tracks.values()].sort((x, y) => x.n - y.n);
  if (!list.length) {
    panel.finish('No se han encontrado canciones. Puede que Spotify haya cambiado su diseño: avísanos en responsive-muse.com.');
    return 0;
  }

  // 2. Build the file and offer it
  const cell = v => '"' + String(v).replace(/"/g, '""') + '"';
  const body = FORMAT === 'txt'
    ? list.map(t => `${t.artist} - ${t.title}`).join('\n')
    : ['#,Título,Artista,Álbum,Fecha en que se añadió,Duración,URL', ...list.map(t =>
        [t.n, t.title, t.artist, t.album, t.added, t.duration, t.url].map(cell).join(','))].join('\n');
  const missing = expected && list.length < expected ? ` (la playlist dice ${expected}; si faltan, baja hasta el final y vuelve a ejecutarlo)` : '';
  const name = (heading || clean(document.title.split(' | Spotify')[0]) || 'playlist').replace(/[\\/:*?"<>|]+/g, '_');
  deliver(`${stop ? 'Parado antes de terminar. ' : ''}Listo: ${many(list.length, 'canción')}${missing}.`, body, `${name}.${FORMAT}`);
  return list.length;
})();