Muting a browser tab quickly is a skill that you may not know you need to know. But once you use it a few times, you won’t forget. Blaring popup video ads are bad enough, but when you still have the headphones on from your last video-conference, they can be startling. If you have many tabs open and are switching frequently, sometimes it is hard to determine which tab belatedly launched that video or sound. Some browsers have recently changed and so the results returned by search engines on this subject may be dated. But for most, it is simple:
For Microsoft Edge and Firefox, the tab playing the sound displays a microphone icon. Click on that tab to make it the “active” tab and Ctrl+M is the keyboard shortcut to mute the active tab.
Google Chrome is a bit more complicated. See below: