One of my favorite features of Windows 10 is Taskbar Preview which allows you to peek running app quickly instead of restoring it into the normal window. This ability has become an iconic visualization of Windows 7 then Microsoft decided to bring the feature for Windows 8 and Windows 10, yet the preview size is unchanged. At glance, you can’t resize Windows 10 taskbar thumbnail preview. However, the regedit comes to solve the problem.
By default, the dimension of Taskbar Preview is about 200 pixels, both length, and height. The size might feel less convenient for some people, especially when you want to see more details from the preview. The problem may get worse if you using a 4K monitor, the screen is bigger yet the Taskbar Preview insist with its original size.
As I mentioned previously, we gonna use a regedit to customize Taskbar Preview’s thumbnail size. Don’ worry, it’s not as hard as you think. The following guide is dedicated especially for Windows 10 and probably should work for previous operating systems as well, like Windows 7 and Windows 8.
How to Resize Windows 10 Taskbar Thumbnail Preview
Run the regedit, you can find it from the Start Menu.
After the Registry Editor showed up, copy and paste the following directory into the address bar, then press Enter on the keyboard.
Right-click on the blank area of the right panel, hover the pointer to New button and select DWORD (32-bit) Value.
Rename the new key to MinThumbSizePx and press Enter to confirm.
Now, right-click on the MinThumbSizePx and select Modify…
On the Value data, put the desired size using a number from 300-1000 depending on your screen resolution. Next, click OK. I recommend you to choose 1/4 or 1/3 of the screen length dimension in pixel.
Restart the computer to take the effect.
The following screenshots are an example of my customization. The previous setting looks 1/4 of current Taskbar Preview size.
It also still works perfectly in the multiple windows configuration.
In case you are not satisfied after resizing thumbnail of the Taskbar Preview, you can go to the regedit, locate the directory I’ve shown to you before and then delete MinThumbSizePx. Restarting also required to finish this action.
In addition, the pixel size is set to be the maximum dimension of the preview. If the window has a less length, it may look so tiny in the preview.
So, what do you think about customizing the Taskbar Preview thumbnail? Do you like the bigger preview size or prefer the smaller one?