fontmake

library3.12.1pypypi✓ verified 81d ago

A Python library for compiling fonts from sources (UFO, Glyphs) to binary (OpenType, TrueType). Version 3.11.1, requires Python >=3.9.

data

pip install fontmake

github ↗package ↗

INSTALL

IMPORT

SIG · FONTMAKE

fontmake

datapythonv3.12.1

Install

4.3s avg

Import

—

Disk

83MB

Pass rate

5/ 10

Env Coverage5 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v3.12.1 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.910 runs

build_error

glibc

py 3.10–3.910 runs

installs and imports cleanly · install 4.3s · import 0.000s · 84MB

83MB installed

● package 83MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

fontmake

✓ import fontmake

✗ from fontmake import fontmake

Compile a DesignSpace file into a variable font.

from fontmake import run_from_designspace run_from_designspace('path/to/your.designspace', output_path='output.ttf')

fontmake --version

Debug

Known issues

deprecatedThe `fontmake.instantiator` module was moved to `ufo2ft.instantiator` in v3.9.0. Import from `ufo2ft.instantiator` instead.

fix

Replace `from fontmake.instantiator import ...` with `from ufo2ft.instantiator import ...`.

affects: >=3.9.0

breakingAs of v3.11.0, `USE_MY_METRICS` component flags are no longer automatically set for variable fonts. This can cause metric mismatches if your workflow depended on the old behavior.

fix

If you need `USE_MY_METRICS`, set it explicitly in your source or pass `--use-my-metrics` to fontmake (if available) or handle in post-processing.

affects: >=3.11.0

gotchaPython 3.8 support dropped in v3.11.0. The library requires Python >=3.9.

fix

Upgrade to Python 3.9 or later.

affects: >=3.11.0

gotchaThe `skipExportGlyphs` in DesignSpace lib overrides the UFO lib.plist key per the DS spec, but only since v3.10.1 for static TTFs. Prior versions may not respect the override correctly.

fix

Upgrade to >=3.10.1 or ensure the UFO lib.plist has the correct values.

affects: <3.10.1

Upgrade

Version history

3.12.1latest on PyPI · released Jun 2, 2026

Audit

Dependencies

fonttoolsrequiredrequired for font operations

glyphsLibrequiredrequired for Glyphs source support

ufo2ftrequiredrequired for UFO to binary compilation

ufoLib2requiredrequired for UFO file I/O

skia-pathopsoptionaloptional for path optimization

ttfautohint-pyoptionaloptional for hinting

Agent activity

10 hits · last 30 days

node

Resources

githubhttps://github.com/googlei18n/fontmake ↗

packagehttps://pypi.org/project/fontmake/ ↗