Source Serif 4

Source Serif 4 is a free transitional serif font by Frank Grießhammer: 16 styles, variable, SIL Open Font License. Preview it in your own words, see every style and character, and download it from Google Fonts.

Designer: Frank Grießhammer. Category: Serif · Transitional. Licence: SIL Open Font License.

Transitional serif with optical sizes; pairs with Source Sans

Get Source Serif 4 from Google Fonts

FaceTypes: open and free fonts, curated

New in 2026