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A variable font (VF) is a font file that is able to store a continuous range of design variants. An entire typeface (font family) can be stored in such a file, with an infinite number of fonts available to be sampled.[2]
The variable font technology originated in Apple's TrueType GX font variations. The technology was adapted to OpenType as OpenType variable fonts (OTVF) in version 1.8 of the OpenType specification.[3][4][5] The technology was announced by Adobe, Apple, Google, and Microsoft in September 2016. Making such a feature standardized in OpenType paved the way for support in many software platforms.[3][6][7][8]
Variable fonts should not be confused with variable-width fonts. A variable font may be either variable-width or fixed-width.[9]
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