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How to use Font Bakery

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Miguel Sousa edited this page Aug 31, 2022 · 12 revisions

Font Bakery is a command-line tool for checking the technical quality of font files.

Adobe Fonts font-processing pipeline uses Font Bakery to validate all the fonts submitted by foundry partners.

Font Bakery includes a profile named check-adobefonts which will execute only the checks that are deemed important to the Adobe Fonts team.

How to install Font Bakery

Python version 3.7 (or greater) is required for running Font Bakery. Please refer to the instructions provided at www.python.org for downloading and installing Python on your platform.

Command to install a stable version of Font Bakery:

python -m pip install --upgrade fontbakery'[freetype]'

Command to install a beta version of Font Bakery:

python -m pip install --upgrade --pre fontbakery'[freetype]'

How to run Font Bakery

Running Font Bakery requires specifying a profile. Adobe Fonts profile is named check-adobefonts.

Run all checks

  • on one font:

     fontbakery check-adobefonts MyFont-Regular.ttf

  • on one font in verbose mode:

     fontbakery check-adobefonts --verbose MyFont-Regular.ttf

  • on one font and generate a report in HTML format:

     fontbakery check-adobefonts --html report.html MyFont-Regular.ttf

  • on one font, but only show the checks that FAIL:

     fontbakery check-adobefonts --loglevel FAIL MyFont-Regular.ttf

  • on multiple fonts:

     fontbakery check-adobefonts MyFont-Regular.ttf MyFont-Bold.ttf MyFont-Italic.ttf MyFont-BoldItalic.ttf

  • on multiple fonts, using a wildcard:

     fontbakery check-adobefonts MyFont-*.ttf

List all checks (that are included in the Adobe Fonts profile)

fontbakery check-adobefonts --list-checks MyFont-Regular.ttf

Exclude specific checks from running

fontbakery check-adobefonts -x com.google.fonts/check/font_version -x com.adobe.fonts/check/sfnt_version MyFont-Regular.otf

  • or simply,

     fontbakery check-adobefonts -x font_version -x sfnt_version MyFont-Regular.otf

Only run specific checks

fontbakery check-adobefonts -c com.google.fonts/check/font_version -c com.adobe.fonts/check/sfnt_version MyFont-Regular.otf

  • or simply,

     fontbakery check-adobefonts -c font_version -c sfnt_version MyFont-Regular.otf

List all available options

fontbakery check-adobefonts --help

How to interpret the results

  • INFO

    The check's output is merely informational.

  • PASS

    The check succeeded. Congratulations! If your font gets enough of these, you might even get a treat. (Seriously! 😀)

  • SKIP

    The check was skipped because it is not relevant for the font being checked. For example, variable font checks are skipped when the font is static.

  • WARN

    A font issue that you may consider addressing. For more details, read the check's output.

  • FAIL

    A font issue that must be fixed. Adobe Fonts font-processing pipeline will reject the font.

  • ERROR

    The check failed because of a bug in Font Bakery's own code. Please report it at https://github.com/googlefonts/fontbakery/issues

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