Source Serif 4 – Serif Fonts Free for Commercial Use

Source Serif 4 is a transitional serif typeface that complements the Source Sans Pro family, characterized by a careful match of letter proportions and typographic color. Its design draws inspiration from Pierre Simon Fournier, incorporating unique idiosyncrasies while adapting them for contemporary use.
Supports Latin, Latin Extended, Vietnamese, Cyrillic, Cyrillic Extended and Greek, making it suitable for multilingual environments.
Available in Light, Regular and Bold weights, including Italic styles, Supporting a wide range of uses from long-form text to headings and titles.
The license is SIL Open Font License, allowing flexible use for commercial purposes and redistribution.

Source Serif 4 was designed by Frank Grießhammer to serve as a modern counterpart to traditional serif typefaces. The aim was to create a harmonious relationship between serif and sans serif styles, enhancing typographic versatility.