Steps to Resize Preview Image on Taskbar in Windows 10

This guide provides a clear, practical overview of steps to resize preview image on taskbar in Windows 10, with useful context, important details, and straightforward takeaways for everyday readers.

Instructions to increase the preview image size on Taskbar

Step 1:

The default thumbnail image on the Taskbar is as shown below.

First, we press the Windows + R key combination to open the Run interface and then enter the keyword regedit to open the Registry Editor tool.

Step 2:

Next in this interface we access the path as below.

ComputerHKEY_CURRENT_USERSoftwareMicrosoftWindowsCurrentVersionExplorerTaskband

Step 3:

Right- click the Taskband folder then select New and click DWORD (32-bit) Value to create a new key.

Please name the new key is MinThumbSizePx . We right-click New Value #1 and then select Rename and enter a new name for this key.

Step 4:

Double click on this key to change the value at Value . You enter the size in px for the thumbnail image displayed on the Taskbar that you want to change. Note the size will be less than 500px.

After entering the new size, click OK to save.

Step 5:

Right- click on the Taskbar and then select Task Manager . Now click on Windows Explorer and then click the Restart button below as shown to restart Windows 10's Explorer.

Immediately after restarting, hover over the icons of open programs on your computer and you will see the preview image size has changed, increasing according to the size you enter.

To return to the old size, you just need to delete the MinThumbSizePx key, then you also need to restart Windows Explorer in Task Manager.

Good luck.