Google Fonts Tools
This project contains tools used for working with the Google Fonts collection, plus Google Fonts Glyph Set Documentation in the /encodings subdirectory. While these tools are primarily intended for contributors to the Google Fonts project, anyone who works with fonts could find them useful.
Additional documentation in /docs
The tools and files under this directory are available under the Apache License v2.0, for details see LICENSE
Google Fonts Official Glyph Sets
The glyph sets useful for type designers that were previously hosted in this repository have been moved to:
https://github.com/googlefonts/glyphsets/tree/main/GF_glyphsets
Tool Usage Examples
Compare fonts:
gftools compare-font font1.ttf font2.ttf
Add a METADATA.pb to a family directory
gftools add-font ../ofl/newfamily
Sanity check a family directory:
gftools sanity-check --repair_script=/tmp/fix.py ../ofl/josefinsans
gftools sanity-check --repair_script=/tmp/fix.py --fix_type=fsSelection ../ufl
Check a font family against the same family hosted on Google Fonts:
gftools qa [fonts.ttf] -gfb -a -o qa
Check a variable font family against the same family as static fonts:
gftools qa -f [vf_fonts] -fb [static_fonts] --diffenator --diffbrowsers -o ~/path/out
Fix a non hinted font
gftools fix-nonhinting font_in.ttf font_out.ttf
Package and PR a family update to google/fonts. Find much more detailed documentation in /docs/gftools-packager.
gftools packager "Family Sans" path/to/local/google/fonts -py
Tool Installation
Please note that gftools requires Python 3.7 or later.
Please install these tools using pip:
pip install gftools
If you would like to use gftools qa:
brew install pkg-config # needed for interpolation checks
pip install 'gftools[qa]'
Tool Requirements and Dependencies
gftools packager needs the command line git program in a version >= Git 2.5 (Q2 2015) in order to perform a shallow clone (--depth 1) of the font upstream repository and branch. This is not supported by pygit2/libgit2 yet.
gftools manage-traffic-jam requires two private files which contain sensitive data. Ask m4rc1e for them.
Google Fonts API Key
In order to use the scripts gftools qa and gftools family-html-snippet, you will need to generate a Google Fonts api key, https://developers.google.com/fonts/. You will then need to create a new text file located on your system at ~/.gf-api-key (where ~ is your home directory), which contains the following:
[Credentials]
key = your-newly-generated-googlefonts-api-key
Upstream project repos
Developers
Releasing a New Version
- Commit and push your final changes for the new version.
- Create an annotated Git tag of the version number, with a prepended "v", like so:
git tag -a v3.1.1 - Write the release notes into the tag message. They will show up as release notes on the release page in GitHub.
Release files for gftools 0.10.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| gftools-0.10.0.tar.gz | 8.5 MB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| gftools-0.10.0-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 10.6 MB
Release files / gftools-0.10.0.tar.gz
| Download URL | gftools-0.10.0.tar.gz |
|---|---|
| Size | 8.5 MB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
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BLAKE2b-256 checksum How to use checksums |
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Yes |
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Transparency logRelease files / gftools-0.10.0-py3-none-any.whl
| Download URL | gftools-0.10.0-py3-none-any.whl |
|---|---|
| Size | 2.1 MB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
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|
BLAKE2b-256 checksum How to use checksums |
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| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/7.0.0 CPython/3.13.14
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Sep 7, 2026.
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