How to Never Miss Alerts on macOS Again by Flashing the Screen

Ben Stegner 14-11-2017

Have you ever missed an important notification on your Mac? You can set up so many different notifications 11 More Widgets For Yosemite's Notification Center Looking for more widgets for Yosemite's Notification Center? There are quick ways to monitor your system's status, find out what's on TV, control your thermostat, and much more. Read More that sometimes one slips by. If you’ve had this issue before, one of macOS’s little-known features 9 Mac System Preferences You Haven't Tweaked Yet Whether you're new to OS X or a longtime user, there's probably something in System Preferences you haven't found yet. Here are nine things you might have missed. Read More can help you with missing alerts.


This feature flashes the screen briefly when you receive a notification:

  1. Click the Apple menu in the top-left corner of your screen and choose System Preferences > Accessibility.
  2. On the left sidebar, select the Audio option under the Hearing category.
  3. You’ll see an option labeled Flash the screen when an alert sound occurs. Check it to enable the option.
  4. Click Test Screen Flash if you want a quick example of how it works.

How to Never Miss Alerts on macOS Again by Flashing the Screen macOS Screen Flash Alert

As intended, this helps users with hearing disabilities to see notifications more easily. But you can use it to your advantage in other ways. If you often keep your computer muted and don’t notice the popup in the corner, you can’t really miss the flash. Plus, if you have more than one Mac, the flash lets you know where the alert fired.

While it’s a minor effect, this could cause an issue for those with epilepsy. Thus, you should take care when using it in crowded areas. For more tricks like this, check out other useful features of your Mac you probably aren’t using 7 Useful Things You Probably Aren't Using on Your Mac Better plan your day, quickly find what you're looking for and multitask like a boss — here's a look at seven excellent OS X features that you're probably not using. Read More .

Do you like the screen flash or is the standard notification enough for you? If you found this feature handy, let us know in the comments!


Image Credit: luckybusiness/Depositphotos

Related topics: Notification, Productivity.

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  1. Steve
    November 15, 2017 at 6:24 am

    sorry but iCloud photos sharing is a rip off. It would cost me over $20 to share all my memories with family - what a joke. Photo sharing is 100% free with Android.

    • Ben Stegner
      November 16, 2017 at 7:01 pm

      Hi Steve, did you mean to comment on a different article? This article is about flashing the screen for macOS alerts.