TYPE DESIGN INFORMATION PAGE last updated on Mon Apr 15 05:38:31 EDT 2024

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TTC: TrueType Collection

A TrueType Collection file, or TTC file, is a collection of truetype fonts. From Microsoft's web site: "A TrueType Collection (TTC) is a means of delivering multiple TrueType fonts in a single file structure. TrueType Collections are most useful when the fonts to be delivered together share many glyphs in common. By allowing multiple fonts to share glyph sets, TTCs can result in a significant saving of file space. For example, a group of Japanese fonts may each have their own designs for the kana glyphs, but share identical designs for the kanji. With ordinary TrueType font files, the only way to include the common kanji glyphs is to copy their glyph data into each font. Since the kanji represent much more data than the kana, this results in a great deal of wasteful duplication of glyph data. TTCs were defined to solve this problem." Microsoft offers "breakttc", a utility that breaks a TTC file into its consituent truetype files. Elsewhere, free open source code, called ttc2ttf, is offered for this purpose.

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