Disappointing to see no improvements in 12.0, despite saying that "engineers are working on it" 2 years ago.

You were right, I dont like this solution :)

Is there any plan to address this in upcoming releases? I'm on a trial version now and am considering purchasing but this bothers me somewhat.

Everything above 100%, doesn't matter if 200, 300 or something in between produces blurry fonts in Mathematica notebooks on Windows with 4k monitors.

What one can also try is to change the screen resolution in the mathematica preferences.

Attachments:

(The forum scales my screenshots, makes them look more blurry, try copying them to your local machine and zoom in 100%)

@Luis Rademacher, I noticed you used 150% DPI on your 4K monitor. You may not want to do that as it will make non DPI aware software look more blurry.

I'm not a computer or math expert, so I could be wrong, but I think for those non DPI aware software, when you set DPI to 100%, 200%, 300%, etc, to scale their UI, operating system only needs to clone original pixels. But when you set DPI somewhere between 100%, 200%, 300%..., OS needs to do some calculates and create fake pixels, makes UI look more blurry. I have tested this many times for non DPI aware programs.

Glad they are working on this issue.

My monitors:

• Main monitor: P2715Q, 27", 3840x2160, landscape mode, DPI 200%;
• Secondary monitor: P2415Q, 24", 3840x2160, portrait mode, DPI 225%;

I prefer to put Mathematica notebooks on my secondary monitor as it is in portrait mode, perfect for Mathematica notebooks.

I wish Wolfram engineers make Mathematica a true DPI aware software, UI should not be blurry no matter the DPI settings of each monitors.

Many DPI aware software on Windows 10 display correctly on main monitor, but UI looks blurry on secondary monitors (if DPI settings of main monitor and secondary monitors are different).

For example:

• Many (if not most) Microsoft's own software (including Windows Explorer, Microsoft Office 2016, Visual Studio 2017, Process Explorer...).
• JetBrains Rider;
• JetBrains WebStorm;
• SmartGit;

There are other software works perfectly no matter what DPI you use on main monitor and secondary monitors.

For example:

• Google Chrome
• Firefox
• Windows Store apps (e.g. Microsoft Edge, Todoist...)
• Visual Studio Code (based on Electron, they fixed this issue recently)
• Neo4j Desktop
• PotPlayer

I don't know how to make UI of Mathematica scales correctly and not blurry at the same time. But there are 2 good workarounds (probably mentioned in the links above):

(screenshots below are from my main/boot monitor, 3840x2160, DPI 200%)

1) Change DPI scaling behavior to "System (Enhanced)", and increase notebook "Magnification": Most part of UI looks sharp (except the notebook), and seems everything scales correctly.

2) Change DPI scaling behavior to "Application", and increase notebook "Magnification": Everything looks sharp, most parts of UI don't scale correctly but most contents of notebooks scale correctly.

I have the same problem with my 4K monitor (Windows 10, newest version).

Also I am running mathematica 11.2 on my MacBook Pro (2012, Retina display, macOS Sierra 10.12.6), and there the OS has no problems, everything is perfect as it should be.

See this questions:

Stackexchange:

• https://mathematica.stackexchange.com/questions/134054/blurry-fonts-in-notebooks

• https://mathematica.stackexchange.com/questions/123717/mathematica-11-with-high-dpi-4k-screen

Comments:

Microsoft:

https://blogs.windows.com/buildingapps/2017/04/04/high-dpi-scaling-improvements-desktop-applications-windows-10-creators-update/

Others:

• https://www.digitaltrends.com/computing/how-to-adjust-high-dpi-scaling-in-windows-10/

• https://www.howtogeek.com/175664/how-to-make-the-windows-desktop-work-well-on-high-dpi-displays-and-fix-blurry-fonts/

As I said above:

"Also I am running mathematica 11.2 on my MacBook Pro (2012, Retina display, macOS Sierra 10.12.6), and there the OS has no problems, everything is perfect as it should be."

The problem is Mathematica on Windows with 4K Monitors!

I tried that. I doesn't fix the issue for me. At 100% every app and interface element in Windows looks unreadably tiny. A 4k monitor typically has about 4 times as many pixels as a 1920 and therefore a scaling like 150% is more or less necessary. At that scaling almost every programs in Windows looks great, with sharp fonts and good size, except Mathematica.

If I use MM scaling as suggested (with Windows scaling at 100%), everything else in Windows is still tiny and many elements of Mathematica's interface (e.g. menu bar) are still tiny.