OpenTypefontteja

OpenTypefontteja are fonts that use the OpenType file format. OpenType is a font technology developed by Microsoft and Adobe in the 1990s that combines characteristics of TrueType and PostScript Type 1 fonts. An OpenType font may use either TrueType outlines or PostScript outlines (CFF).

OpenType fonts include advanced typographic features implemented via layout tables such as GSUB (glyph substitution) and GPOS (glyph positioning). This enables ligatures, contextual alternates, old-style figures, fractions, small caps, and support for many writing systems, including right-to-left and vertical layouts in languages that require them within a single font.

Compatibility and usage: OpenType fonts are widely supported across major operating systems—Windows, macOS, and Linux—and are commonly used in desktop publishing and on the web (often delivered as WOFF/WOFF2).

Variation fonts: The OpenType Font Variations specification allows a single font file to contain multiple design instances along axes such as weight, width, and optical size, reducing the need to manage many separate font files.

Availability and licensing: OpenTypefontteja are distributed by most major type foundries and collections, including open-source options. Users should observe licensing terms, which vary by font, particularly for embedding in documents and websites.