Ÿ

Y with diaeresis
Ÿ ÿ
Usage
Language of originTlingit language, Welsh language
History
Development
Y y
  • Ÿ ÿ

ÿ is a Latin script character composed of the letter ⟨y⟩ and the diaeresis diacritical mark.

As a diaeresis is never used on the first letter of a word and all-caps text typically omitted all accents, there was assumed to be no need for an uppercase ⟨Ÿ⟩ when computer character sets such as CP437 and ISO 8859-1 were designed. However much software assumes that conversion from lower-case to upper-case and then back again is lossless, so ⟨Ÿ⟩ was added to many character sets such as CP1252, ISO 8859-15, and Unicode. This phenomenon also arose for the German eszett ⟨ß⟩.

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