Enhance Your Windows 10 Taskbar Previews for Better Productivity
Learn how to enlarge taskbar window previews in Windows 10 using the Registry Editor to improve your multitasking efficiency.
Managing multiple open applications just became easier.
When you hover your cursor over an active program icon on the Windows 10 taskbar, a window preview appears. This feature helps you quickly identify which applications are currently open.

By default, these previews are relatively small. This size works well on devices with 13-inch screens, but on larger monitors, the previews may be too tiny to be useful. Fortunately, you can adjust their size to better suit your display.

Start by opening the Registry Editor. Press Win + R, type regedit, and hit Enter. Alternatively, you can search for regedit in the Start menu.
Navigate to the following registry key:
HKEY_CURRENT_USERSOFTWAREMicrosoftWindowsCurrentVersionExplorerTaskband

Right-click on an empty area within the Taskband folder, choose New → DWORD (32-bit) Value. Name this new value:
MinThumbSizePx

Double-click the new parameter and assign it a numeric value between 0 and 500—for example, 450. After setting the value, close the Registry Editor.

Next, open Task Manager, locate the Explorer process, right-click it, and select Restart to apply the changes.

That's it! Your taskbar window previews are now larger and easier to see. Feel free to experiment with different values in the Registry Editor to find the size that best suits your workflow.
If you want to revert to the default preview size, simply delete the MinThumbSizePx parameter from the registry and restart the Explorer process again.
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