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# How to set custom resolution on macOS
- URL: https://en.blog.themarfa.name/how-to-set-custom-resolution-on-macos/
- Published: 2021-11-17T06:29:44.000Z
- Updated: 2021-11-17T06:29:44.000Z
- Description: BetterDummy help you create a virtual display with the resolution you need or set any resolution on the primary or secondary monitor.
- Author: Konstantin Dokuchaev
- Tags: macos, BetterDummy

New Macs on chips with M1 for some reason do not give a normal opportunity to set HiDPI (Retina) resolution on 4K displays. And in general on macOS there are problems with setting costume resolution values.

Using the **[BetterDummy](https://github.com/waydabber/BetterDummy)** utility, youcan easily solve this problem. It will help you create a virtual display with the resolution you need or set any resolution on the primary or secondary monitor.

After installing the utility on the menu bar, you need to select the **Create new dummy** item and select one of a dozen with small resolutions.

![](https://blog.themarfa.name/content/images/2021/11/image-124.png)

There are a variety of aspect ratios with different DPIs: 1: 1, 9:16, 16: 9 and others.

The created blanks are added to the **System Preferences** \> **Monitors** section . When you select a blank in the **Use as** drop-down menu, you need to specify the desired monitor and the selected extension will be immediately applied to it.

![](https://blog.themarfa.name/content/images/2021/11/image-125.png)

In the BetterDummy drop-down menu, you can control the parameters of fake monitors and quickly change their resolution or turn them off altogether.

![](https://blog.themarfa.name/content/images/2021/11/image-126.png)

[Download BetterDummy](https://github.com/waydabber/BetterDummy)