U00FF

U+00FF is the Unicode code point for the Latin small letter y with diaeresis, represented as the character "ÿ". It belongs to the Latin-1 Supplement block and is used in various orthographies that require a y bearing a diaeresis.

The uppercase form of this character is Ÿ, which is U+0178 (Latin capital letter Y with diaeresis). Together, these two code points reflect the capital and small forms used in languages that denote a distinct y with a diaeresis.

In common encodings, U+00FF appears as follows: UTF-8 encodes it as the two-byte sequence C3 BF, UTF-16 as 00FF, and UTF-32 as 000000FF. In HTML, the lowercase letter can be written as ÿ and the uppercase as Ÿ.

Normalization and decomposition: the canonical decomposition of U+00FF maps to the sequence U+0079 (Latin small letter y) followed by the combining diaeresis U+0308. This reflects its precomposed form as a ligature of a base letter and a diacritic.

Usage and context: the character is used in certain languages to represent a distinct y with a diaeresis and may appear in proper names, loanwords, or phonetic transcriptions. It is not common in modern English orthography, though it can be encountered in multilingual texts and historical materials.

Related characters include the uppercase Ÿ (U+0178) and other Latin letters with diaeresis. U+00FF is a stable, widely supported code point in modern Unicode capable of rendering in standard fonts, though display can vary with typeface support for diacritics.