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fontwhich: Determine fonts used to render text

[ gpl, program, utility ] [ Propose Tags ] [ Report a vulnerability ]

Fontwhich is a commandline tool that used pango to determine which default fonts would be used to render some text, or which font would be used for a particular language script.

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Versions [RSS] 0.1.0
Change log ChangeLog.md
Dependencies base (<5), bytestring, extra, gi-pango, gi-pangocairo, simple-cmd, simple-cmd-args, text [details]
License GPL-3.0-or-later
Copyright 2026 Jens Petersen <juhpetersen@gmail.com>
Author Jens Petersen <juhpetersen@gmail.com>
Maintainer Jens Petersen <juhpetersen@gmail.com>
Uploaded by JensPetersen at 2026-02-27T05:55:54Z
Category Utility
Home page https://github.com/juhp/fontwhich
Bug tracker https://github.com/juhp/fontwhich/issues
Source repo head: git clone https://github.com/juhp/fontwhich.git
Distributions
Executables fontwhich
Downloads 1 total (1 in the last 30 days)
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Status Docs not available [build log]
All reported builds failed as of 2026-02-27 [all 2 reports]

Readme for fontwhich-0.1.0

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Fontwhich

Fontwhich is a small CLI tool that uses pango to show which default fonts are used to render some text.

It should work on any Linux distro with the Cairo and Pango libraries: it requires the fonts to be available but not a graphical session.

Usage

$ fontwhich --help

fontwhich

Usage: fontwhich [--version] [-f|--font FONT] [-l|--lang LANG] [-x|--hex] [TEXT]

  Describes the fonts used to render text with pango

Available options:
  -h,--help                Show this help text
  --version                Show version
  -f,--font FONT           Base font [default: Sans]
  -l,--lang LANG           Language code
  -x,--hex                 Output UTF-8 hex codes

$ fontwhich Hello 🌍 World δΈ–η•Œ

23 bytes
'Hello ' : Noto Sans
'🌍' : Noto Color Emoji
' World ' : Noto Sans
'δΈ–η•Œ' : Noto Sans CJK JP

$ fontwhich -f Serif "こんにけは πŸ˜€ δΈ–η•Œ"

27 bytes
'こんにけは ' : Noto Serif CJK JP
'πŸ˜€' : Noto Color Emoji
' ' : Noto Serif CJK JP
'δΈ–η•Œ' : Noto Serif CJK JP

$ fontwhich -l ja

Primary font for ja is: "Noto Sans CJK JP"

$ fontwhich --hex 🍊

4 bytes
'🍊' [f0 9f 8d 8a] : Noto Color Emoji

Building and installation

On Fedora:

$ cabal-rpm builddep
$ cabal install

There is a copr repo: https://copr.fedorainfracloud.org/coprs/petersen/fontwhich/

Misc

Code was assisted with Gemini Pro 3.1.

The tool is related conceptually to https://github.com/sudipshil9862/whichfont (C codebase).

Collaborate

The code is distributed under GPLv3+.

Repository: https://github.com/juhp/fontwhich