Exportar tus publicaciones guardadas de Reddit a CSV o Markdown

// Responsive Muse · Reddit Saved Posts Exporter · v1.0 · 2026-10-22
// Saves everything you saved on Reddit (posts and comments) to CSV, Markdown or TXT: subreddit,
// title, author, date, link and the text of saved comments. Reddit's own list stops at about
// 1,000 items, so export it before it fills up. Runs only on old.reddit.com, whose pages stay
// the same for years: it opens your saved list page by page in a hidden frame of the same site,
// like clicking "next" yourself. It makes no network requests of its own and never reads
// cookies, passwords or tokens.
(async () => {
  const TOOL = 'Exportar guardados de Reddit';
  const FORMAT = 'csv';        // 'csv' (Excel, Sheets), 'md' (Notion, Obsidian) or 'txt' (links only)

  if (location.hostname !== 'old.reddit.com' || !/^\/user\/[^/]+\/saved/.test(location.pathname)) {
    alert('Abre primero tus guardados en old Reddit (con tu sesión iniciada):\nhttps://old.reddit.com/user/me/saved/');
    return;
  }
  // Must be your own list: old Reddit shows the signed-in user in the header
  const me = (document.querySelector('#header .user a[href*="/user/"]')?.textContent || '').trim();
  const owner = (location.pathname.split('/')[2] || '').toLowerCase();
  if (owner !== me.toLowerCase()) {
    alert(me
      ? `Esta no es tu lista. Abre:\nhttps://old.reddit.com/user/${me}/saved/`
      : 'Inicia sesión en old.reddit.com y abre tu propia lista de guardados.');
    return;
  }
  // A small box on the page shows progress and asks before changing anything,
  // so you never need to read or edit the console.
  const many = (n, word) => `${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));

  // Load one page of the list in a hidden frame of the same site and wait for it
  const loadPage = path => new Promise(resolve => {
    const frame = document.createElement('iframe');
    frame.style.cssText = 'position:absolute;left:-9999px;width:1000px;height:800px';
    const done = doc => { resolve(doc); setTimeout(() => frame.remove(), 0); };
    frame.onload = () => done(frame.contentDocument);
    setTimeout(() => done(null), 30000);
    frame.src = new URL(path, location.origin).href;
    document.body.appendChild(frame);
  });

  // Read the saved items of one page
  const items = new Map();
  const read = doc => {
    for (const t of doc.querySelectorAll('#siteTable > .thing[data-fullname]')) {
      const id = t.dataset.fullname;
      if (items.has(id)) continue;
      const comment = id.startsWith('t1_');
      const ts = Number(t.dataset.timestamp);
      items.set(id, {
        type: comment ? 'comment' : 'post',
        subreddit: t.dataset.subredditPrefixed || (t.dataset.subreddit ? 'r/' + t.dataset.subreddit : ''),
        title: (t.querySelector('a.title')?.textContent || '').trim(),
        author: t.dataset.author || '',
        date: ts ? new Date(ts).toISOString().slice(0, 10) : '',
        score: t.dataset.score || '',
        text: comment ? (t.querySelector('.usertext-body .md')?.innerText || '').trim() : '',
        link: t.dataset.url && !t.dataset.url.startsWith('/r/') ? t.dataset.url : '',
        permalink: 'https://www.reddit.com' + (t.dataset.permalink || ''),
      });
    }
    return doc.querySelector('.next-button a')?.getAttribute('href') || '';
  };

  // 1. Page through the whole list
  let stop = false;
  panel.stoppable(() => { stop = true; });
  let next = read(document);
  let page = 1;
  while (next && !stop) {
    panel.text(`Leyendo la página ${++page}… ${many(items.size, 'elemento')} hasta ahora`);
    const doc = await loadPage(next);
    if (!doc) break;
    next = read(doc);
    await sleep(1000);   // a human pace between pages
  }
  const list = [...items.values()];
  if (!list.length) {
    panel.finish('Aún no tienes nada guardado, o Reddit ha cambiado su diseño. Si tienes guardados, 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(i => i.permalink).join('\n')
    : FORMAT === 'md' ? list.map(i => `- **${i.subreddit}** · ${i.date} · [${(i.title || 'comment').replace(/[[\]]/g, '')}](${i.permalink})` +
        (i.link ? ` · [link](${i.link})` : '') + (i.text ? `\n  > ${i.text.replace(/\n/g, '\n  > ')}` : '')).join('\n')
    : ['Tipo,Subreddit,Título,Autor,Fecha,Puntos,Texto del comentario,Enlace,URL de Reddit',
       ...list.map(i => [i.type, i.subreddit, i.title, i.author, i.date, i.score, i.text, i.link, i.permalink].map(cell).join(','))].join('\n');
  deliver(`${stop ? 'Parado antes de terminar. ' : ''}Listo: ${many(list.length, 'elemento guardado')}.`, body, `reddit-saved.${FORMAT}`);
  return list.length;
})();