Tampermonkey script for focus input.

tm.js

// ==UserScript==
// @name         Focuse input
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://eth-converter.com/
// @icon         https://www.google.com/s2/favicons?sz=64&domain=eth-converter.com
// @grant        none
// @require https://cdnjs.cloudflare.com/ajax/libs/jquery/3.6.1/jquery.min.js
// ==/UserScript==

(function() {
    'use strict';

    // Your code here...
    console.log('Ready.');
    $('#wei').focus();
})();