# createPostScriptSubset(subsetName:format:glyphs:count:encoding:) Creates a subset of the font in the specified PostScript format. ``` func createPostScriptSubset(subsetName: CFString, format: CGFontPostScriptFormat, glyphs: UnsafePointer?, count: Int, encoding: UnsafePointer?) -> CFData? ``` ## Parameters `subsetName` The name of the subset. `format` The PostScript format of the font. `glyphs` An array that contains the glyphs in the subset. `count` The number of glyphs specified by the `glyphs` array. `encoding` The default encoding for the subset. You can pass `nil` if you do not want to specify an encoding. ## Return Value A subset of the font created from the supplied parameters. ## Discussion For more information on PostScript format, see *Adobe Type 1 Font Format*, which is available from . --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)