Simple Dark Theme Bookmarklet for web pages

darkthemeswitcher-inline.js

javascript:(d=>{var css=`html{background:#fefefe;filter:invert(100%)}*{background:inherit}img:not([src*=".svg"]),video{filter:invert(100%)}`,style,id='dark-theme-snippet',ee=d.getElementById(id);if(null !=ee)ee.parentNode.removeChild(ee);else{style=d.createElement('style');style.id=id;style.styleSheet?style.styleSheet.cssText=css:style.appendChild(d.createTextNode(css));d.head.appendChild(style)}})(document)

darkthemeswitcher.js

javascript: (d => {
  var css = `
        html{
          background: #fefefe;
          filter: invert(100%)
        }
        * {
          background: inherit
        }
        img:not([src*=".svg"]), video{
          filter: invert(100%)
        }
  `,
    style,
    id = 'dark-theme-snippet',
    ee = d.getElementById(id);
  if (null != ee) ee.parentNode.removeChild(ee);
  else {
    style = d.createElement('style');
    style.id = id;
    style.styleSheet
      ? style.styleSheet.cssText = css
      : style.appendChild(d.createTextNode(css));
    d.head.appendChild(style)
  }
})(document)