Windows Custom Font Replacer

Swap out the default Windows system font (Segoe UI) with any font you want using simple registry files. Includes presets for SF Pro (macOS look) and Verdana Pro.

Quick Start

1. Install your desired font (right-click .ttf > Install, or use winget for MS Store fonts)
2. Double-click a .reg file to apply — confirm the UAC prompt
3. Sign out and back in to see the change

Included Presets

File	Effect
set-mac-font.reg	Replaces Segoe UI with SF Pro Regular
set-verdana-font.reg	Replaces Segoe UI with Verdana Pro
set-win-font.reg	Reverts back to default Segoe UI

Included Fonts

• SF-Pro.ttf — Apple's SF Pro font for a macOS-style look
• verdana-pro/ — 20 Verdana Pro TTF files (all weights + condensed variants)

Downloading Fonts from the Microsoft Store

You can grab free font packages from the MS Store using winget:

winget install --id <PRODUCT_ID> --source msstore

For example, Verdana Pro (https://apps.microsoft.com/detail/9n8d67vhhdc2):

winget install --id 9N8D67VHHDC2 --source msstore

See SPEC.md for the full step-by-step process.

Creating Your Own Preset

Use this template and replace the font name on the last line:

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Fonts]
"Segoe UI (TrueType)"=""
"Segoe UI Bold (TrueType)"=""
"Segoe UI Bold Italic (TrueType)"=""
"Segoe UI Italic (TrueType)"=""
"Segoe UI Light (TrueType)"=""
"Segoe UI Semibold (TrueType)"=""

[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes]
"Segoe UI"="Your Font Name Here"

Reverting

Double-click set-win-font.reg and sign out. Everything goes back to normal.

Requirements

• Windows 10 or 11
• Admin privileges (for registry changes)

Command‑line Usage

You can also perform the registry import from PowerShell with elevation. This is useful when scripting or if you prefer the terminal:

# prompt for UAC and import the .reg file
Start-Process -FilePath reg.exe \
    -ArgumentList 'import',"\"C:\\Users\\ltanedo\\projects\\windows-font-replacer\\set-verdana-font.reg\"" \
    -Verb RunAs

After running the elevated import, verify the substitution has been written:

reg query "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes" /v "Segoe UI"
# should output:
# HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\FontSubstitutes
#     Segoe UI    REG_SZ    Verdana Pro