Exportar los Me gusta de YouTube Music a CSV o Excel, gratis (sin iniciar sesión en otras webs)

// Responsive Muse · YouTube Music Playlist Exporter · v1.0 · 2026-10-31
// Saves any YouTube Music playlist or album you can open on music.youtube.com (your own playlists,
// your Liked Music or public ones) to CSV or TXT: title, artist, album, duration and link. Useful
// to back up a playlist or move it to Spotify, Apple 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 YouTube Music';
  const FORMAT = 'csv';        // 'csv' (Excel, Sheets, playlist converters) or 'txt' ("Artist - Title", one per line)

  if (location.hostname !== 'music.youtube.com' || !/^\/(playlist|browse)/.test(location.pathname)) {
    alert('Abre primero una playlist en YouTube Music, por ejemplo tus Me gusta:\nhttps://music.youtube.com/playlist?list=LM');
    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', lugar: 'lugares' })[word] || word + 's'}`;   // 1 vídeo, 2 vídeos
  const panel = (() => {
    const box = document.createElement('div');
    box.style.cssText = 'display:block!important;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 text = el => (el?.textContent || '').replace(/\s+/g, ' ').trim();

  // Read the songs currently on the page (YouTube Music keeps every loaded row in the page)
  const collect = () => {
    for (const row of document.querySelectorAll('ytmusic-responsive-list-item-renderer')) {
      const title = text(row.querySelector('.title-column .title') || row.querySelector('.title'));
      if (!title) continue;
      // Secondary columns: artist(s), then the album (only when it links to an album page;
      // on music videos and episodes that column holds the upload date instead)
      const cols = [...row.querySelectorAll('.secondary-flex-columns yt-formatted-string')].map(text);
      const hasAlbum = !!row.querySelector('.secondary-flex-columns a[href^="browse/"]');
      const watch = row.querySelector('a[href*="watch?v="]');
      const id = watch ? new URL(watch.href, location.origin).searchParams.get('v') : '';
      const link = id ? 'https://music.youtube.com/watch?v=' + id : (row.querySelector('.title a')?.href || '');
      const key = link || title + '|' + cols[0];
      if (tracks.has(key)) continue;
      tracks.set(key, {
        n: tracks.size + 1,
        title,
        artist: cols[0] || '',
        album: hasAlbum ? cols[1] || '' : '',
        duration: text(row.querySelector('.fixed-column yt-formatted-string, .fixed-columns yt-formatted-string')),
        url: link,
      });
    }
  };

  // YouTube Music scrolls an inner panel (div#content), not the window: find it from the first row
  const scroller = (() => {
    for (let e = document.querySelector('ytmusic-responsive-list-item-renderer'); e && e !== document.body; e = e.parentElement) {
      if (e.scrollHeight > e.clientHeight + 50 && /auto|scroll/.test(getComputedStyle(e).overflowY)) return e;
    }
    return document.scrollingElement;
  })();

  // 1. Scroll to the bottom again and again: YouTube Music loads the next 100 songs each time
  let stop = false;
  panel.stoppable(() => { stop = true; });
  let idle = 0;
  while (idle < 4 && !stop) {
    const before = tracks.size;
    collect();
    scroller.scrollTop = scroller.scrollHeight;
    document.querySelector('ytmusic-continuation-item-renderer')?.scrollIntoView({ block: 'end' });
    await sleep(1500);
    idle = tracks.size === before ? idle + 1 : 0;
    panel.text(`Recogiendo canciones… ${tracks.size}`);
  }
  const list = [...tracks.values()];
  if (!list.length) {
    panel.finish('No se han encontrado canciones. Puede que YouTube Music 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} - ${t.title}`).join('\n')
    : ['#,Título,Artista,Álbum,Duración,URL', ...list.map(t =>
        [t.n, t.title, t.artist, t.album, t.duration, t.url].map(cell).join(','))].join('\n');
  const name = (document.title.replace(/ - YouTube Music$/, '') || 'playlist').replace(/[\\/:*?"<>|]+/g, '_');
  deliver(`${stop ? 'Parado antes de terminar. ' : ''}Listo: ${many(list.length, 'canción')}.`, body, `${name}.${FORMAT}`);
  return list.length;
})();