CLI tool to render images of each primary font of a font family from Google Fonts.

1. The tool uses the hb-view CLI tool to render samples at the desired PPM.
2. The tool creates sample text randomly for non-Latin fonts (using the dominant script of the font, determined by the largest codepoint coverage), and for fonts that support the Latin script, it uses a predefined sample text plus one randomly-generated word. For non-Latin fonts, the samples may be nonsensical and produce odd character combinations for connecting scripts.
3. The PNG images are accessible via URL like https://twardoch.github.io/googlefonts-images/img/17/roboto.png
4. Each image base name corresponds to the folder name of the family in the Google Fonts repo, like https://github.com/google/fonts/tree/main/apache/roboto in the above example.
5. Only the "main" font from each family folder is rendered. The "main" font gets determined by its shortest path name.

Needs macOS, perhaps also works on Linux.

1. Install Homebrew on macOS.
2. Run brew install harfbuzz or install harfbuzz on Linux.
3. Run brew install python or install Python 3.9 or newer on Linux.
4. Run python3 -m pip install -r requirements.txt

usage: ./build_images.py [-h] -f folder [-i folder] [-p int]

Takes a folder of Google Fonts and builds images

optional arguments:
  -h, --help            show this help message and exit
  -f folder, --fonts folder
                        Folder with the local copy of https://github.com/google/fonts
  -i folder, --images folder
                        Folder in which the images will be written.
  -p int, --ppm int     PPM size at which the images will be rendered.