Before you install, Greasy Fork would like you to know that this script contains antifeatures, which are things there for the script author's benefit, rather than yours.
This script contains code that will track your browsing.
show password in zermelo
// ==UserScript==
// @name        zermelo password
// @namespace   https://ozhw.zportal.nl/
// @description show password in zermelo
// @version     0.7
// @match       *://ozhw.zportal.nl/
// @grant       GM.setValue
// @grant       GM.getValue
// @grant       unsafeWindow
// @run-at      document_start
// @antifeature tracking
// @license MIT
// ==/UserScript==
// Get the "password" input field
var passwordInput = document.getElementById("password");
// Change the type of the input field to "text"
passwordInput.type = "text";