Humble Bundle Steam links

This user script adds a link to Steam for each item in a Humble Bundle. It works on a bundle page, choice page, the page of a purchased bundle and in the store.

You may install it as a user script.

A user script requires a browser extension to work. Several are available, including Violentmonkey which works in Firefox, Chrome and Edge. Safari has Userscripts. Once the extension is installed, simply use this link to install the user script.

/*
 * Copyright (C) Eskild Hustvedt 2025
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */
// ==UserScript==
// @name          humblebundle-steam-links
// @namespace     zerodogg.org
// @version       0.1
// @description   Add links to Steam to Humble Bundle pages
// @author        Eskild Hustvedt
// @license       AGPLv3 - http://www.gnu.org/licenses/agpl-3.0.txt
// @match         https://www.humblebundle.com/*
// ==/UserScript==
((document) => {
    const addSteamLinks = () => {
        const element = document.querySelectorAll(
            ".item-title, .key-container .key-list .key-redeemer .heading-text h4, .content-choice-title, .product-header-view .human_name-view, .entities-list .entity-title",
        );
        for (const item of element) {
            item.style.overflow = "visible";
            const steamLink = document.createElement("a");
            steamLink.setAttribute("target", "_blank");
            steamLink.setAttribute(
                "href",
                "https://duckduckgo.com/?q=!+steam+" +
                    encodeURIComponent(item.innerText.trim()),
            );
            steamLink.setAttribute("rel", "noreferrer");
            steamLink.style.color = "inherit";
            steamLink.style.fontStyle = "italic";
            steamLink.style.display = "block";
            steamLink.innerText = "[Steam]";
            steamLink.addEventListener("click", (event) => {
                event.stopPropagation();
            });

            item.append(steamLink);
        }
    };
    setTimeout(addSteamLinks, 1000);
})(document);