# Transform Identifiers for CFStringTransform Constants that identify transforms used with [`CFStringTransform(_:_:_:_:)`](/documentation/CoreFoundation/CFStringTransform(_:_:_:_:)). ## Discussion In macOS 10.4 and later, with [`CFStringTransform(_:_:_:_:)`](/documentation/CoreFoundation/CFStringTransform(_:_:_:_:)) you can also use any valid ICU transform ID defined in the [ICU User Guide for Transforms](https://unicode-org.github.io/icu/userguide/transforms/general/). ## Topics ### Constants [`kCFStringTransformStripCombiningMarks`](/documentation/CoreFoundation/kCFStringTransformStripCombiningMarks) The identifier of a transform to strip combining marks (accents or diacritics). [`kCFStringTransformToLatin`](/documentation/CoreFoundation/kCFStringTransformToLatin) The identifier of a transform to transliterate all text possible to Latin script. Ideographs are transliterated as Mandarin Chinese. [`kCFStringTransformFullwidthHalfwidth`](/documentation/CoreFoundation/kCFStringTransformFullwidthHalfwidth) The identifier of a reversible transform to convert full-width characters to their half-width equivalents. [`kCFStringTransformLatinKatakana`](/documentation/CoreFoundation/kCFStringTransformLatinKatakana) The identifier of a reversible transform to transliterate text to Katakana from Latin. [`kCFStringTransformLatinHiragana`](/documentation/CoreFoundation/kCFStringTransformLatinHiragana) The identifier of a reversible transform to transliterate text to Hiragana from Latin. [`kCFStringTransformHiraganaKatakana`](/documentation/CoreFoundation/kCFStringTransformHiraganaKatakana) The identifier of a reversible transform to transliterate text to Katakana from Hiragana. [`kCFStringTransformMandarinLatin`](/documentation/CoreFoundation/kCFStringTransformMandarinLatin) The identifier of a transform to transliterate text to Latin from ideographs interpreted as Mandarin Chinese. This transform is not reversible. [`kCFStringTransformLatinHangul`](/documentation/CoreFoundation/kCFStringTransformLatinHangul) The identifier of a reversible transform to transliterate text to Hangul from Latin. [`kCFStringTransformLatinArabic`](/documentation/CoreFoundation/kCFStringTransformLatinArabic) The identifier of a reversible transform to transliterate text to Arabic from Latin. [`kCFStringTransformLatinHebrew`](/documentation/CoreFoundation/kCFStringTransformLatinHebrew) The identifier of a reversible transform to transliterate text to Hebrew from Latin. [`kCFStringTransformLatinThai`](/documentation/CoreFoundation/kCFStringTransformLatinThai) The identifier of a reversible transform to transliterate text to Thai from Latin. [`kCFStringTransformLatinCyrillic`](/documentation/CoreFoundation/kCFStringTransformLatinCyrillic) The identifier of a reversible transform to transliterate text to Cyrillic from Latin. [`kCFStringTransformLatinGreek`](/documentation/CoreFoundation/kCFStringTransformLatinGreek) The identifier of a reversible transform to transliterate text to Greek from Latin. [`kCFStringTransformToXMLHex`](/documentation/CoreFoundation/kCFStringTransformToXMLHex) The identifier of a reversible transform to transliterate characters other than printable ASCII to XML/HTML numeric entities. [`kCFStringTransformToUnicodeName`](/documentation/CoreFoundation/kCFStringTransformToUnicodeName) The identifier of a reversible transform to transliterate characters other than printable ASCII to their Unicode character name in braces. [`kCFStringTransformStripDiacritics`](/documentation/CoreFoundation/kCFStringTransformStripDiacritics) The identifier of a transform to remove diacritic markings. --- 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)