Stop autoplay videos , 防止網頁自動播放影片

How to stop autoplay videos
http://www.pcworld.com/article/2858421/internet/how-to-stop-autoplay-videos.html
(Firefox , Internet Explorer)

Stop videos from autoplaying in your browser
http://www.pcworld.com/article/3083923/internet/stop-videos-from-autoplaying-in-your-browser.html
(Chrome , Edge)

How to stop autoplaying HTML5 videos
http://www.pcworld.com/article/2922403/how-to-stop-autoplaying-html5-videos.html