DPI - Change for Modern UI in Windows 8

How to Change DPI Scaling for Modern UI in Windows 8

information   Information
This tutorial will show you how to change the DPI scaling of only the Metro Start screen and apps in Windows 8.

You may sometimes feel the Start Screen tiles and it's apps UI is too big or too small for your monitor size. By modifying registry you can change the DPI (which controls the size of the Start Screen UI) by changing the monitor size detected by Windows.

warning   Warning
Modifying the registry incorrectly may cause Windows to be corrupted. Be careful while modifying registry entries.

Tip   Tip
Consider this, you have set a HTPC setup with Windows 8 on an 42" TV. Because of its size, the Start Screen tiles may appear too small. By doing this you can pretend the installed monitor was a 10.1" monitor, and it will resize the UI to be bigger because it have less DPI.

warning   Warning
This doesn't work in Windows 8.1 and Windows RT 8.1. There is no known way yet to disable the automatic detection of Monitor Size.

To get started, do the following steps:

1. Press the Windows+R keys to open the Run dialog, type regedit, and click/tap on OK.

Open regedit.PNG

2. If prompted by UAC, then click/tap on Yes.

3. In regedit, navigate to the location below.
NOTE: If you don't have Scaling, right click on Explorer, point to New, then select Key.


Navigate to.PNG

3. Create new string value, name it MonitorSize.
NOTE: If you already have the MonitorSize string value, go to step 4.

4. Double-Click on the MonitorSize value, then enter the desired monitor size.
NOTE: Use periods instead of commas, and don't insert the inch symbol (").

edit value.PNG

5. Close Registry Editor, then restart your computer.
Tip   Tip

That's it,
Your Start Screen DPI settings should change, sizing to the same as the Monitor Size you've specified.

Last edited by a moderator:
is there a similar registry setting for application text size? for example the menu text in photoshop cs6 is absolutely tiny on my large display (2560x1440) - screen resolution > make text and other items larger or smaller does not solve the issue nor does photoshop's text setting (small, medium, large) feature. thankfully most applications i use show very well on my display, the text is very legible and icons are very recognizable, but photoshop and a few others fail miserably, the text is just too small.

I'm having a similar problem with running a high-res monitor and the text on the Modern UI being extremely tiny. Anyone know how to fix this without disturbing the desktop display?

God Bless,
Eclectic Rhapsody

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