How to fix blurry fonts in Windows 10

If you use Windows 10 on a high-resolution display, you have probably faced the problem with blurry fonts in your system or some applications. It is extremely annoying thing to work with. Generally, the problem is observed on devices with resolution exceeding 200 DPI. We noticed the DPI scaling is not working as it was in Windows Vista, Windows 7 and Windows 8.1. Some sort of problems can appear if DPI value exceeds 120. As well it can happen if an application does not have DPI-Aware flag. The same situation can be faced in Windows 10.

Here you can see one of the examples of such blurry fonts problem:

In case if you are not satisfied with the font/display scaling, you can return to the “classic” scaling scheme for a specific application, or even for the whole system.

Eliminate the blur font for a specific application

If the blurry fonts problem appears only in one specific application (for example, in Mozilla Firefox internet browser), you can try to solve the problem of blurring font individually for this application.

1. Open the application properties (in our example firefox.exe)
2. Select the Compatibility tab
3. Enable the Disable display scaling on high DPI settings
   
4. Save the changes and restart your app

Make sure that the problem is solved. If not resolved, go to the next step — decreasing the system DPI settings.

Reducing system DPI settings in Windows 10

On many devices, blurring problems and poor readability fonts are observed in the system using the scaling 125% or higher. In this case, you should try to reduce the scaling settings (DPI) to 100%.

1. Open the modern control panel system settings
   
2. Then, in the Display section, set the Change the size of text, apps and other items to the left (must be set to 100%)
   
3. Reboot your Windows 10

If it does not work – go to the next solution.

Return the old scaling method in Windows 10

Windows 10 and Windows 8.1 uses a new fonts scaling method and you can easily return the old scaling method previously used in Windows 8 RTM and Windows 7. In most cases, this will help to solve the problem of blurred and incorrect font displaying. Use this steps:

1. At first, create a file revert_classic_dpi.bat with the following text (see screenshot below):
   REG ADD “HKCU\Control Panel\Desktop” /v DpiScalingVer /t REG_DWORD /d 0x00001018 /f
   REG ADD “HKCU\Control Panel\Desktop” /v Win8DpiScaling /t REG_DWORD /d 0x00000001 /f
   REG ADD “HKCU\Control Panel\Desktop” /v LogPixels /t REG_DWORD /d 0x00000078 /f REG ADD “HKCU\Control Panel\Desktop” /v DpiScalingVer /t REG_DWORD /d 0x00001018 /f
   REG ADD “HKCU\Control Panel\Desktop” /v Win8DpiScaling /t REG_DWORD /d 0x00000001 /f
   REG ADD “HKCU\Control Panel\Desktop” /v LogPixels /t REG_DWORD /d 0x00000078 /f
   
2. Then run revert_classic_dpi.bat as Administrator
3. Reboot your Windows 10
4. After all steps check if the problem is solved