Unicode and language coverage in fonts
Learn why a “Unicode font” may still miss your language, how character maps differ from scripts, and how to test real words rather than relying on labels.
Reviewed
Unicode mapping does not guarantee useful language support
Unicode assigns code points to characters; a font chooses which of those code points it maps to glyphs. A file may contain a Unicode cmap table yet support only Basic Latin. Conversely, a script can require combining marks, localized forms, shaping, or punctuation beyond its most visible letters. Coverage should be measured from the actual cmap and tested with language-specific text.
Glyph presence and correct shaping are separate checks
Arabic joining, Indic reordering, mark positioning, ligatures, and localized alternates depend on OpenType layout tables and shaping engines. Seeing a glyph in a character map proves that it exists, not that words will render correctly. Test representative words, accents, numbers, punctuation, and mixed-direction text in the software where the font will be used.
Treat character maps as evidence, not certification
Fonts2u generates maps only for ranges containing meaningful mapped glyphs and divides large ranges into compact pages. The maps help you inspect coverage quickly, but Unicode blocks do not map perfectly to languages. For important publishing work, validate against a language-specific character set and ask a native reader to review the result.