How to Enlarge Tiny Taskbar Thumbnail Previews in Windows

Ben Stegner 27-06-2016

There are lots of ways to customize the Taskbar in Windows 10 7 Tips for Customizing the Windows 10 Taskbar The taskbar remains a staple feature in Windows 10. It's been given a fresh look and new features, including Cortana. We show you all the tweaks to make the taskbar your own. Read More , and they’re worth taking the time to perform, since you probably interact with the Taskbar all the time. While some of these tweaks are simple changes in the settings, others require a trip to the Registry.


One of the most useful Registry tweaks you can make to your taskbar is to enlarge the thumbnail previews that pop up when you hover over an open application. By default, these are tiny and don’t let you see anything distinguishable in the window, meaning they’re pretty much useless.

You make these previews easier on the eyes Are You Nearsighted or Farsighted? Tips to Make Windows More Accessible for Young & Old Computers use print that's too small, your eyesight changes, you get headaches, and the computer gets called a lot of dirty names. Consult this guide to Windows Accessibility tools for some stress relief! Read More with the following tweak:

Open the Registry Editor by pressing Windows Key + R and typing regedit into the Run menu. Remember that changing values in here can cause problems, so be careful while editing the Registry. Navigate to this folder:


Now, right-click in the right-hand panel and choose New > DWORD (32-bit) Value. Give it a name of MinThumbSizePx, then double-click on the new value so you can change it. The default value is 200 (pixels); 400 is probably a good baseline, but if you’re using an especially small or big screen you may want to try something different. Try a few numbers here to find the best option for you.


Now just log off of Windows and log back in Is Windows Taking Forever to Shut Down? Try This! You’re just turning your PC off; how hard can it be? Shutting down is a complex process and much can go wrong. If your Windows 7, 8.1, or 10 gets stuck, check out our troubleshooting... Read More , and when you hover over an open program you’ll see the new and improved bigger thumbnails. If you’re not happy, just jump back to that value and change the number inside. Now your previews actually give you an idea of what’s in that window!

What size previews do you like? Let us know if you appreciated changed this setting down in the comments!

Image Credit: Natee K Jindakum via

Related topics: Windows 10, Windows Taskbar, Windows Tricks.

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  1. Anonymous
    June 28, 2016 at 7:08 pm

    I did this a couple of weeks ago on my Windows 10 setup and it's a very useful tweak. I often work with having several Explorer windows open at once, and at the default sizes, it was nearly impossible to tell from the thumbnail previews which folder was which. I increased the size to 400 pixels wide and it's made it a lot easier.

  2. Skrell
    June 27, 2016 at 1:52 pm

    How can I do this for the ALT+TAB view thumbnails?