Small y with Diaeresis HTML entity ÿ

ÿ is the HTML entity for Small y with Diaeresis ÿ (U+00FF). Copy the decimal ÿ and hex ÿ codes plus CSS, JavaScript, Python and URL escapes.

Entity
ÿ
Legacy form
&yuml (no semicolon)
Code point
U+00FF
Unicode name
LATIN SMALL LETTER Y WITH DIAERESIS
Block
Latin-1 Supplement
Category
Lowercase letter (Ll)
Since
Unicode 1.1
Defined in
HTML 4.01 and HTML5

Codes to copy

HTML namedÿWorks in HTML; in XML only & < > " ' are predefined.
HTML decimalÿWorks in HTML and XML.
HTML hexÿWorks in HTML and XML.
CSScontent: "\FF";In a stylesheet, for ::before and ::after.
JavaScript"\u00FF"Also valid in JSON.
Python"\u00ff"Python 3 string literal.
Python by name"\N{LATIN SMALL LETTER Y WITH DIAERESIS}"Readable alternative using the Unicode name.
URL%C3%BFPercent-encoded UTF-8 bytes, for a path or query value.
UTF-8 bytesC3 BF2 bytes.
UTF-1600FF1 code unit, which is what JavaScript length counts.

When to use it

ÿ writes U+00FF (Small y with Diaeresis), a small letter from the Unicode Latin-1 Supplement block, encoded since Unicode 1.1. On a page saved as UTF-8 the letter can simply be typed; the entity helps in ASCII-only templates and code samples.

The name dates from HTML 4, so it works in every browser and in old email clients.

Browsers also accept the legacy form &yuml without a semicolon, for compatibility with old pages; new HTML should always end the reference with a semicolon.

More latin letters with accents

All latin letters with accents · Every HTML entity · Encode or decode text

Source: the WHATWG HTML Standard list of named character references and the Unicode Character Database (Unicode 18.0).