namemc_b64_inject.user.js

// ==UserScript==
// @name         Base64 from Head Command Inject
// @namespace    http://tampermonkey.net/
// @version      2025-12-03
// @description  try to take over the world!
// @author       ZenithKnight
// @match        https://namemc.com/skin/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=namemc.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    // Your code here...
    function waitForElement(selector, callback) {
        const el = document.querySelector(selector);
        if (el) {
            callback(el);
        } else {
            requestAnimationFrame(() => waitForElement(selector, callback));
        }
    }
    async function setClipboard(text) {
        const type = "text/plain";
        const clipboardItemData = {
            [type]: text,
        };
        const clipboardItem = new ClipboardItem(clipboardItemData);
        await navigator.clipboard.write([clipboardItem]);
    }

    waitForElement('.head-command', (target) => {
        const newElem = document.createElement('div');
        let input = document.querySelector('input.head-command').value;
        let b64 = input.match(/(?:^|\")(e[A-z0-9+=]{1,})/)[1];
        let url = atob(b64).match(/(https?:\/\/textures\.minecraft\.net\/texture\/[A-z0-9]*)/)[1];
        newElem.innerHTML = `<div class="card mb-3">
          <div class="card-header py-1">Base64 for Mannequin Profiles</div>
          <div class="card-body px-2 py-0">
            <div class="input-group input-group-sm my-2">
              <input id="b64" class="head-command form-control" style="font-family: 'Cascadia Mono', Consolas, monospace" value="${b64}" readonly=""/>
              <button class="btn btn-outline-secondary copy-button rounded-end" type="button" href="javascript:void(0)">Copy</button>
            </div>
          </div>
        </div>`;
        newElem.addEventListener("click", (event) => {
            setClipboard(b64);
        })
        Array.from(document.getElementsByClassName("card mb-3")).pop().insertAdjacentElement('afterend', newElem);
    });
})();