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Anti-Aliasing for powerline font icons is poor when using 12 pt or lower #10116

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opened 2026-01-31 02:12:58 +00:00 by claunia · 3 comments
claunia commented 2026-01-31 02:12:58 +00:00
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Originally created by @unavaliabl3 on GitHub (Aug 12, 2020).

Environment

Windows build number: 19041.388
Windows Terminal version:1.1.2021.0

Actual behavior

Icons in powerline fonts are blurred in the Windows Terminal using 12 pt or lower, therefore ,they are hardly recognizable
The following sample is the Windows logo icon in Windows Terminal, Gnome Terminal on Ubuntu, and ConEmu:

~ 8_13_2020 12_16_06 AM (2)
Windows Terminal, font:3270NF, size:12pt - windows logo not recognizable
C__Windows 8_13_2020 12_29_29 AM
Gnome Terminal, font:UbuntuMono NF, size:12pt - windows logo recognizable
~ 8_13_2020 12_16_12 AM
ConEmu, font:3270NF, size:12pt - windows logo recognizable

I also tested other non-terminal software:
_Untitled - Notepad 8_13_2020 12_39_35 AM
notepad.exe, font:Anonymous pro NF,size:12pt - windows logo recognizable
OneNote for Windows 10 8_13_2020 12_47_00 AM
OneNote for W10 (100% resized), font:3270NF,size=12pt - windows logo recognizable

Originally created by @unavaliabl3 on GitHub (Aug 12, 2020). # Environment ```none Windows build number: 19041.388 Windows Terminal version:1.1.2021.0 ``` # Actual behavior Icons in powerline fonts are blurred in the Windows Terminal using 12 pt or lower, therefore ,they are hardly recognizable The following sample is the Windows logo icon in Windows Terminal, Gnome Terminal on Ubuntu, and ConEmu: ![~ 8_13_2020 12_16_06 AM (2)](https://user-images.githubusercontent.com/52642831/90043510-cac60380-dcfe-11ea-98ff-68753c42795a.png) Windows Terminal, font:3270NF, size:12pt - windows logo not recognizable ![C__Windows 8_13_2020 12_29_29 AM](https://user-images.githubusercontent.com/52642831/90042089-c8fb4080-dcfc-11ea-8624-e0afb0db0146.png) Gnome Terminal, font:UbuntuMono NF, size:12pt - windows logo recognizable ![~ 8_13_2020 12_16_12 AM](https://user-images.githubusercontent.com/52642831/90042275-0c55af00-dcfd-11ea-97e5-ab030c7b8f53.png) ConEmu, font:3270NF, size:12pt - windows logo recognizable I also tested other non-terminal software: ![_Untitled - Notepad 8_13_2020 12_39_35 AM](https://user-images.githubusercontent.com/52642831/90042702-9a319a00-dcfd-11ea-9ea1-6b02f71e2195.png) notepad.exe, font:Anonymous pro NF,size:12pt - windows logo recognizable ![OneNote for Windows 10 8_13_2020 12_47_00 AM](https://user-images.githubusercontent.com/52642831/90043355-8fc3d000-dcfe-11ea-8633-d0cf8ee29e2b.png) OneNote for W10 (100% resized), font:3270NF,size=12pt - windows logo recognizable
claunia commented 2026-01-31 02:12:59 +00:00
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@unavaliabl3 commented on GitHub (Aug 12, 2020):

~ 8_13_2020 12_59_42 AM
Also in newer Windows Terminal Preview 1.1.2022.0, face=3270NF, size = 12 pt

@unavaliabl3 commented on GitHub (Aug 12, 2020): ![~ 8_13_2020 12_59_42 AM](https://user-images.githubusercontent.com/52642831/90044497-4c6a6100-dd00-11ea-968a-5d6540748e6f.png) Also in newer Windows Terminal Preview 1.1.2022.0, face=3270NF, size = 12 pt
claunia commented 2026-01-31 02:12:59 +00:00
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@DHowett commented on GitHub (Aug 21, 2020):

Thanks for the report! I wonder if there's some sort of hinting instructions we're missing.

If you change the antialiasing mode to cleartype or to grayscale (if you're using cleartype), does it help?

@DHowett commented on GitHub (Aug 21, 2020): Thanks for the report! I wonder if there's some sort of hinting instructions we're missing. If you change the antialiasing mode to cleartype or to grayscale (if you're using cleartype), does it help?
claunia commented 2026-01-31 02:13:00 +00:00
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@unavaliabl3 commented on GitHub (Aug 21, 2020):

I am using cleartype in above screenshots. Grayscale doesn't help. The powerline icons are still blurry
image
Windows Terminal,version:1.1.2233.0,font:3270NF,antialiasing:grayscale, size:12pt - not recognizable

@unavaliabl3 commented on GitHub (Aug 21, 2020): I am using cleartype in above screenshots. Grayscale doesn't help. The _powerline_ icons are still blurry ![image](https://user-images.githubusercontent.com/52642831/90859878-9962cd00-e3bb-11ea-8400-3ae5376e9430.png) Windows Terminal,version:1.1.2233.0,font:3270NF,antialiasing:grayscale, size:12pt - not recognizable
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Reference: starred/terminal#10116
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