PT Sans Caption
Google Fonts · Alexandra Korolkova · 2009

The caption-optimised variant of PT Sans, tuned specifically for small-size legibility in supporting text roles.
About
PT Sans Caption shares the same humanist DNA as its parent family but features optical adjustments that prevent letterforms from closing up or losing distinction at small point sizes. It is best deployed in footnotes, captions, and data labels where space is tight but readability must be preserved. The strong Cyrillic support makes it particularly useful in bilingual Russian–English publishing contexts.
Classification
PT Sans Caption is a size-specific variant of PT Sans, optically adjusted with slightly wider proportions and looser spacing to maintain legibility at small sizes. It is intended for captions, footnotes, and other supporting text rather than extended reading.