Utopia

https://utopia.fyi/space/calculator

Utopia is a calculator that help you to tokenize spacing values to be used with their fluid type calculator.

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Type Scale

Type Scale helps you to improve your web typography with a better scaling calculation.

New serif typeface under Google's Roboto font family. It also includes a special variable font option to optimize display base on optical size axes.

Typewolf is an indie typography resources blog curated by Jeremiah Shoaf. It recommends fonts and explores trending typography site on daily basis.