This scary-looking string merely allows you to access an additional settings menu inside Safari called Debug. You'll need to open the application called Terminal (which is found in your Utilities folder), then paste in the following text (without the quotation marks): 'defaults write IncludeInternalDebugMenu 1'. If you don't have the latest version of Safari-say, if you're using a work-provided laptop that has an older version of macOS-it's a bit trickier to pull off. Safari: If you use Apple's Safari browser as your daily driver, you may be wondering to yourself, 'What's autoplay video?' That's because in the newest versions of Safari (starting with version 11, released in 2017), most autoplaying videos are blocked. This method won't typically block videos in the older Adobe Flash format, but we'll explain how to do so below.

This will disable most HTML5-based videos from playing on their own when you load a page. Next, search in the window for the '' setting and double-click it. It's straightforward, but not something you'd stumble across by searching through pull-down menus.įirst, you'll need to access the browser's advanced options by typing 'about:config' (without the quotation marks) in the address bar and hitting Return. (See the Extensions section below.)įirefox: Mozilla's recently revamped Firefox web browser offers a straightforward way to prevent unwanted videos from playing automatically as you hop from site to site. To stop video that does not contain sound, you can use a third-party extension. Chrome: Google recently released Chrome 66, a new version of the popular desktop web browser, which blocks by default autoplay video that contains sound.

Google chrome autoplay video blocker