If a font is chosen which does not contain a glyph for a code point used in the document, it typically displays a question mark, a box, or some other substitute character.Ĭomputer fonts use various techniques to display characters or glyphs. The choice of font, which governs how the abstract characters in the Universal Coded Character Set (UCS) are converted into a bitmap or vector output that can then be viewed on a screen or printed, is left up to the user. Rather, it defines the abstract characters as a specific number (known as a code point) and also defines the required changes of shape depending on the context the glyph is used in (e.g., combining characters, precomposed characters and letter- diacritic combinations).
The Unicode standard does not specify or create any font ( typeface), a collection of graphical shapes called glyphs, itself. This article lists some widely used Unicode fonts (shipped with an operating system or produced by a well-known commercial font company) that support a comparatively large number and broad range of Unicode characters. Fonts which support a wide range of Unicode scripts and Unicode symbols are sometimes referred to as "pan-Unicode fonts", although as the maximum number of glyphs that can be defined in a TrueType font is restricted to 65,535, it is not possible for a single font to provide individual glyphs for all defined Unicode characters (149,186 characters, with Unicode 15.0). The vast majority of modern computer fonts use Unicode mappings, even those fonts which only include glyphs for a single writing system, or even only support the basic Latin alphabet. Computer font that maps glyphs to code points defined in the Unicode StandardĪ Unicode font is a computer font that maps glyphs to code points defined in the Unicode Standard.
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