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# Google Fonts Tools

This project contains tools used for working with the Google Fonts collection, plus **Google Fonts Glyph Set Documentation** in the [/encodings](https://github.com/googlefonts/gftools/tree/main/Lib/gftools/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`](https://github.com/googlefonts/gftools/blob/main/docs)

The tools and files under this directory are available under the Apache License v2.0, for details see [LICENSE](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`](./docs/gftools-packager).

    gftools packager "Family Sans" path/to/local/google/fonts -py

## Tool Installation

**Please note that gftools requires [Python 3.7](http://www.python.org/download/) 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**

* https://github.com/google/protobuf
* https://github.com/behdad/fonttools

## Developers

### Releasing a New Version

0. Commit and push your final changes for the new version.
1. Create an annotated Git tag of the version number, with a prepended "v", like so: `git tag -a v3.1.1`
2. Write the release notes into the tag message. They will show up as release notes on the release page in GitHub.