CharacterNormalize

CharacterNormalize["text", form] converts the characters in text to the specified normalization form.

Examples

Normalize text to NFC form:

CharacterNormalize["café", "NFC"]
(* "café" *)

Normalize to decomposed form:

CharacterNormalize["naïve", "NFD"]
(* "naïve" *)

Please visit the official Wolfram Language Reference for more details.