Automatically Calculating Google Font Aspect Values
November 2025
This is the run of the process I built to determine the font aspect value1 for Google Fonts2.
The data is what I'm using to build a page to normalize fonts sizes at: fonts.alanwsmith.com
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Footnotes
Aspect values can be used by font-size-adjust to normalize the sizes of fonts.
The giant source for free web fonts. Sucks that they use them for tracking unless you pull down and serve your own copy.