As of January 9, 2018, Google Fonts had 848 font families, 114 of which are serif faces. Of those, the following 22 can handle Hanyu Pinyin with tone marks.

• Alegreya



• Alegreya SC



• Cormorant (Caveat: In the Cormorant fonts, the marks for tones 2-4 are nearly vertical, which may not provide sufficient distinction between them for many readers.)



• Cormorant Garamond



• Cormorant Infant



• Cormorant SC



• Cormorant Unicase



• Cormorant Upright (Caveat: The third-tone mark in ǚ is inverted.)



• David Libre



• EB Garamond



• Faustina



• Gentium Basic



• Gentium Book Basic



• Judson



• Maitree



• Manuale



• Noticia Text



• Noto Serif



• Pridi (Caveat: The mark for second tone and the apostrophe look very similar.)



• Taviraj



• Tinos



• Trirong