Greasemonkey script que permite download de legendas a partir dos resultados de busca do site legendas.tv. Instruções: 1. Instale o Greasemonkey (Firefox) ou Tampermonkey (Chrome ou Firefox). 2. Clique em https://gist.githubusercontent.com/pedropedruzzi/f25a010f8a787352575d8f312433979b/raw/download-na-busca-do-legendas-tv.user.js

download-na-busca-do-legendas-tv.user.js

// ==UserScript==
// @name         Download na busca do legendas.tv
// @namespace    http://tampermonkey.net/
// @version      0.4
// @description  Permite download de legendas a partir dos resultados de busca do site legendas.tv
// @author       Pedro Pedruzzi
// @match        http://legendas.tv/busca/*
// @match        https://legendas.tv/busca/*
// @grant        none
// @downloadURL  https://gist.githubusercontent.com/pedropedruzzi/f25a010f8a787352575d8f312433979b/raw/download-na-busca-do-legendas-tv.user.js
// ==/UserScript==

(function() {
    'use strict';

    window.addEventListener('load', tryInstallObserver, false);

    function tryInstallObserver() {
        console.debug('tryInstallObserver()');
        if (document.querySelector("a[href^='/login']")) {
            console.debug("download won't work until the user is signed in. aborting");
            return;
        }
        const targetElement = document.getElementById('resultado_busca');
        if (targetElement == null) {
            console.debug('no #resultado_busca element yet');
            window.requestAnimationFrame(tryInstallObserver);
            return;
        }

        console.debug('tryInstallObserver: ready to install observer');
        const observer = new MutationObserver(function(mutationsList, observer) {
            for (let mutation of mutationsList) {
                if (mutation.addedNodes.length > 0) {
                    console.debug("mutation detected");
                    addDownloadLinks();
                }
            }
        });

        observer.observe(targetElement, { childList: true });
        addDownloadLinks(); // ensure initial set of links are displayed
    }

    function addDownloadLinks() {
        var links = document.querySelectorAll("a[href^='/download/']");
        console.debug('found links:', links.length);
        for (var i = 0; i < links.length; i++) {
            var link = links[i];
            if (link.parentNode.querySelector("a.seta") == null) { // do nothing when there's already a download link there
                var downloadId = link.getAttribute('href').match(/\/download\/([^\/]*)\//)[1];
                link.parentNode.appendChild(createDownloadLink(downloadId));
            }
        }
        return links.length;
    }

    function createDownloadLink(downloadId) {
        var el = document.createElement("a");
        el.setAttribute('href', '/downloadarquivo/' + downloadId);
        el.setAttribute('title', 'Baixar esta legenda agora');
        el.setAttribute('style', 'float:right; position:static');
        el.setAttribute('class', 'seta');
        // old text style
        //el.appendChild(document.createTextNode("download"));
        //el.setAttribute('style', 'float:right; background: #4885c4; padding: 0px 12px 0px; color: white; font-weight: normal; font-size: 13px');
        return el;
    }

})();

Perfeito, muito obrigado :)
Seu userscript é um dos melhores que já vi, economiza muitíssimo do tempo ao baixar legendas