How does one set the icon size of the taskbar in win8.1?

You only need to go to the system interface and find the following interface. The operation details are as follows.

1. Find the taskbar, right-click the blank area, and click the [Properties] option in the pop-up menu. The effect is as follows.

 

2. After entering, we will find the [taskbar] option, as shown in the following figure.

 

3. Select "use the taskbar button" and click "OK.

 

4. The icon on the taskbar has been changed to a large icon.

 

The taskbar icon of win system cannot be customized, but the two icons provided by the system can be used. One is a large image, and the other is a small icon. Here we use a large icon.