The new version of MultiMonitorTool (version 2.20) allows you to easily set the display scaling of specific monitor from command-line, by using the /SetScale command.
The first parameter of the /SetScale command is the name of the monitor (For example: \\.\DISPLAY1). Like in other commands of MultiMonitorTool, you can also specify the monitor ID or the serial number of the monitor, or βPrimaryβ string for the primary monitor.
The second parameter specifies the scaling value. You can specify the absolute scale value in percent, for example: 100,125,150,175,200,225, and so onβ¦
You can also specify a relative value. In this case β you have to specify β0β to set the recommended display scaling, a positive number (1, 2, 3, β¦) to set display scaling larger than recommended, or a negative number (-1, -2, -3, β¦) to set display scaling smaller than recommended.
Hereβs some examples for the /SetScale command:
MultiMonitorTool.exe /SetScale β\\.\DISPLAY2β 150
MultiMonitorTool.exe /SetScale βPrimaryβ 125
MultiMonitorTool.exe /SetScale βGSM5B54β 1
You can download the new version of MultiMonitorToolΒ from this Web page.