Import your manga from Batoto to Mangadex

batoto_follows_to_mangadex.js

/*
Instructions:
1) Go to https://mangadex.com on Chrome.
2) Open the Chrome console (Ctrl+Shift+J on Windows).
3) Copy + paste the code in this file.
4) Replace batoto_ids in line 10 with a list of the manga to follow.
5) Hit Enter.
*/

var batoto_ids = [1, 2, 3, 5, 8] // TODO: REPLACE WITH YOUR OWN MANGA
var successes = [], failures = [];

function follow_manga(index) {
  // Follow this manga by making an AJAX call.
  var id = batoto_ids[index];
  $.ajax({
    url: `/ajax/actions.ajax.php?function=manga_follow&id=${id}`,
    type: "GET",
    success: () => {successes.push(id)},
    error: () => {failures.push(id)},
  })
  .then(() => {
    console.log(`Processed #${index + 1}: ${id}.`);

    // Wait 300ms, then follow the next manga in the list.
    index++;
    if (0 < index && index < batoto_ids.length) {
      setTimeout(() => {follow_manga(index)}, 300);
    } else {
      // Finished processing all manga.
      console.log(`Followed ${successes}. Could not follow ${failures}.`);
    }
  });
}
follow_manga(0);

Muchisimas gracias me ahorraste un buen de trabajo

Saved me a lot of time too! Thank you!