Forced Dark Mode

Enable Dark mode toggle feature on your favourite website. Good for reading articles and blogs. Not suitable for websites with images or videos.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(Tôi đã có Trình quản lý tập lệnh người dùng, hãy cài đặt nó!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Forced Dark Mode
// @namespace    http://ashish.link/
// @author       Ashish Ranjan
// @version      0.2.0
// @description  Enable Dark mode toggle feature on your favourite website. Good for reading articles and blogs. Not suitable for websites with images or videos.
// @license      MIT
// @include      *
// @run-at       document-start
// @grant        none
// ==/UserScript==

(function() {
  var isSet = window.localStorage.getItem('forcedDarkMode');
  var defaultCSS = document.documentElement.style.cssText;

  function init() {
    document.documentElement.style.cssText =
      defaultCSS +
      (isSet ? 'filter: invert(1) hue-rotate(180deg) !important; background-color: black !important;' : '');
  }

  function toggle() {
    isSet = !isSet;
    init();
    window.localStorage.setItem('forcedDarkMode', isSet || '');
  }

  window.addEventListener(
    'load',
    function() {
      var btn = document.createElement('BUTTON');
      var txt = document.createTextNode('Toggle Dark Mode');
      btn.setAttribute(
        'style',
        'color: black;font-size: 10px;position: fixed;bottom: 42px;right: -42px;transform: rotate(270deg);z-index: 100000;background: #80808021;cursor: pointer;font-weight: 100;margin: 0;padding: 2px;outline: none;'
      );
      btn.appendChild(txt);
      document.body.appendChild(btn);
      btn.onclick = toggle;
    },
    false
  );
  init();
})();