Full Window Youtube

README.html

Run the youtube player full-window mode by adding this bookmarlet

<a href='javascript:(function(){var c,b,a=document.body.classList;if(a.contains("fsyoutube-available")){a.toggle("fsyoutube")}else{var d=document.createElement("style");document.head.appendChild(d);b=d.sheet;c=[".fsyoutube #masthead-positioner{display:none;}",".fsyoutube #movie_player{position:fixed;width:100%;height:100%;top:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;}",".fsyoutube video{margin:0 auto;position:relative!important;top:auto!important;left:auto!important;width:auto!important;height:auto!important;max-width:100%!important;min-width:100%!important;}",".ytp-chrome-bottom{width:98%!important;}"];c.forEach(function(e){b.insertRule(e)});a.add("fsyoutube-available");a.add("fsyoutube")}})();)'>FWYT</a>

fwyt.js

(function(){
  var css, ss,
    cl = document.body.classList;
  if (cl.contains('fsyoutube-available')){
    cl.toggle('fsyoutube');
  } else {
    var s = document.createElement("style");
    document.head.appendChild(s);
    ss = s.sheet;
    css = [
      '.fsyoutube #masthead-positioner { display: none; }',
      '.fsyoutube #movie_player {position: fixed; width: 100%; height: 100%; top: 0; bottom: 0; left: 0; display: flex; align-items: center; justify-content: center;}',
      '.fsyoutube video {margin:0 auto; position: relative !important; top: auto !important; left: auto !important; width: auto !important; height: auto !important; max-width: 100% !important; min-width: 100% !important;}',
      '.ytp-chrome-bottom { width: 98% !important; }'
    ];

    css.forEach(function(rule){ ss.insertRule(rule);});
    cl.add('fsyoutube-available');
    cl.add('fsyoutube');
  }
})();

fwyt.min.js

(function(){var c,b,a=document.body.classList;if(a.contains("fsyoutube-available")){a.toggle("fsyoutube")}else{var d=document.createElement("style");document.head.appendChild(d);b=d.sheet;c=[".fsyoutube #masthead-positioner{display:none;}",".fsyoutube #movie_player{position:fixed;width:100%;height:100%;top:0;bottom:0;left:0;display:flex;align-items:center;justify-content:center;}",".fsyoutube video{margin:0 auto;position:relative!important;top:auto!important;left:auto!important;width:auto !important;height:auto!important;max-width:100%!important;min-width:100%!important;}",".ytp-chrome-bottom{width:98% !important;}"];c.forEach(function(e){b.insertRule(e)});a.add("fsyoutube-available");a.add("fsyoutube")}})();