Source Serif 4
Google Fonts · Frank Grießhammer · 2014
A versatile, screen-optimised transitional serif from Adobe with a wide weight range and serious multilingual credentials.
About
Source Serif 4 is designed to complement the Source Sans and Source Code families, providing a serif option of equal rigour and range. Its moderate contrast and generous x-height ensure readability at small sizes on screen, while heavier weights perform confidently as display type. Extended Cyrillic, Greek, and Latin coverage makes it one of the more capable multilingual serif options available on Google Fonts.
Classification
Source Serif 4 sits between oldstyle and modern traditions, with moderate stroke contrast, bracketed serifs, and a large x-height that prioritises screen legibility. Its wide weight range and optical size awareness give it unusual versatility across display and text settings.