By default each font includes the Basic Latin (1) and the Latin-1 Supplement (2), covering Western European, American and most of the African languages: Afrikaans, Alsatian, Basque, Bislama, Breton, Catalan, Chamorro, Danish, Dutch, English, Faroese, Finnish, Flemish, French, Frisian, Friulian, Galician, German, Greenlandic, Icelandic, Indonesian, Irish, Italian, Ladin, Norwegian, Occitan, Portuguese, Romansh, Sami, Scottish, Spanish, Swahili, Swedish and Welsh.
Except for heavy textured fonts, the standard content is often extended to unlimited character sets (3). Extended language support includes Americanist, Avar, Azeri, Balkar, Belarusian, Bulgarian, Chechen, Croatian, Czech, Dutch, Erzya, Greek, Hungarian, Ingush, Khoisan, Latvian, Lezgian, Lithuanian, Macedonian, Moldavian, Ossetian, Pan‑Nigerian, Pinyin, Polish, Romanian, Russian, Serbian, Slovak, Slovenian, Turkish, Ukrainian, Vietnamese, Zulu.
Please note that supported languages are listed based on the presence of a special character, specific to a certain language, and this list may not always be accurate. To make sure a font meets every expectations, the special characters should be tested with the Insert option, available in the Try section.
To preview an extended range of characters and features a font can carry, see the Sans-Titre Pro prototype font, and keep in mind that with more than 6,300 glyphs this can be considered incomplete. Still, so far the prototype is the closest reference to what a "full latin font" means.