Increase OR Decrease Browser Media Playback Speed

// Paste Code INTO Bookmark in Browser so you can Click it when required
// Change (media.playbackRate += 0.1) / (media.playbackRate -= 0.1) to any number you wish
// for example; 0.05


// This CODE INCREASES current media playback speed by +0.1 :


javascript:(function(){[].forEach.call(document.querySelectorAll('video,audio'), media => media.playbackRate += 0.1);console.log('playback speed: '+document.querySelectorAll('video,audio')[0].playbackRate);})();


// This CODE DECREASES current media playback speed by -0.1 :


javascript:(function(){[].forEach.call(document.querySelectorAll('video,audio'), media => media.playbackRate -= 0.1);console.log('playback speed: '+document.querySelectorAll('video,audio')[0].playbackRate);})();


// Enjoy!