A dotted circle is included to make this combining mark visible.

U+0308

COMBINING DIAERESIS

General category
Nonspacing Mark Mn
Unicode block
Combining Diacritical Marks
Combining class
230
Bidirectional class
NSM
Mirrored
No

U+0308 COMBINING DIAERESIS is a Unicode 16.0.0 character in the Nonspacing Mark category. It belongs to the Combining Diacritical Marks block.

Encodings & representations

Choose the representation you need, then copy its value.

Code point

U+0308

Decimal value

776

HTML decimal reference

̈

HTML hexadecimal reference

̈

UTF-8 bytes (hex)

CC 88

UTF-16 code units (hex)

0308

UTF-32 code unit (hex)

00000308

URL percent-encoded UTF-8

%CC%88

C# Unicode escape

\u0308

JavaScript Unicode escape

\u0308

JSON Unicode escape

\u0308

CSS Unicode escape (trailing space)

\0308
About these encodings
  • ASCII positions run from 0 to 127. Position cards show the decimal byte value followed by hexadecimal.
  • “Extended ASCII” is not a single encoding. ISO-8859-1 (Latin-1) and Windows-1252 are shown separately; they differ at bytes 128–159. Windows-1252 leaves five of those bytes undefined.
  • Legacy position cards appear only when the character has an exact mapping. For example, the euro sign is Windows-1252 byte 128 (0x80), but has no ASCII or Latin-1 position. A legacy byte is not necessarily the Unicode code point or its UTF-8 encoding.
  • Percent encoding lists every UTF-8 byte; URL-safe characters do not normally need encoding.
  • JSON escapes omit the surrounding quotes.
  • UTF code units are not byte-order-specific.
  • HTML parsers remap numeric references for U+0000 and some control characters, so these may not round-trip.