Home: go to the homepage U+FFF0 to U+FFFF Specials
Glyph for U+FFFF
Source: Noto Sans

U+FFFF Noncharacter *

U+FFFF was added to Unicode in version 2.0 (1996). It belongs to the block U+FFF0 to U+FFFF Specials in the U+0000 to U+FFFF Basic Multilingual Plane.

This character is a Unassigned and is mainly used in the Unknown script.

The glyph is not a composition. It has a Neutral East Asian Width. In bidirectional context it acts as Boundary Neutral and is not mirrored. In text U+FFFF behaves as Unknown regarding line breaks. It has type Other for sentence and Other for word breaks. The Grapheme Cluster Break is Any.

This is a so-called “noncharacter”, one of 66 in Unicode. These codepoints are reserved solely for internal use. For further information, see Unicode’s FAQ on noncharacters.


System Representation
UTF-32 00 00 FF FF
URL-Quoted %EF%BF%BF
HTML hex reference 
Wrong windows-1252 Mojibake �


Complete Record

Property Value
Age 2.0 (1996)
Unicode Name
Unicode 1 Name
General Category Unassigned
Script Unknown
Bidirectional Category Boundary Neutral
Combining Class Not Reordered
Decomposition Type None
Decomposition Mapping Glyph for U+FFFF Noncharacter*
Simple Lowercase Mapping Glyph for U+FFFF Noncharacter*
Lowercase Mapping Glyph for U+FFFF Noncharacter*
Simple Uppercase Mapping Glyph for U+FFFF Noncharacter*
Uppercase Mapping Glyph for U+FFFF Noncharacter*
Simple Titlecase Mapping Glyph for U+FFFF Noncharacter*
Titlecase Mapping Glyph for U+FFFF Noncharacter*
Case Folding Glyph for U+FFFF Noncharacter*
ASCII Hex Digit
Bidi Control
Bidi Mirrored
Composition Exclusion
Case Ignorable
Changes When Casefolded
Changes When Casemapped
Changes When NFKC Casefolded
Changes When Lowercased
Changes When Titlecased
Changes When Uppercased
Full Composition Exclusion
Default Ignorable Code Point
Emoji Modifier Base
Emoji Component
Emoji Modifier
Emoji Presentation
Extended Pictographic
FC NFKC Closure
Grapheme Cluster Break Any
Grapheme Base
Grapheme Extend
Grapheme Link
Hex Digit
ID Continue
ID Start
IDS Binary Operator
IDS Trinary Operator and
Indic Positional Category NA
Indic Syllabic Category Other
Jamo Short Name
Join Control
Logical Order Exception
Noncharacter Code Point
NFC Quick Check 1
NFD Quick Check 1
NFKC Casefold Glyph for U+FFFF Noncharacter*
NFKC Quick Check 1
NFKD Quick Check 1
Other Alphabetic
Other Default Ignorable Code Point
Other Grapheme Extend
Other ID Continue
Other ID Start
Other Lowercase
Other Math
Other Uppercase
Prepended Concatenation Mark
Pattern Syntax
Pattern White Space
Quotation Mark
Regional Indicator
Sentence Break Other
Soft Dotted
Sentence Terminal
Terminal Punctuation
Unified Ideograph
Variation Selector
Word Break Other
White Space
XID Continue
XID Start
Expands On NFC
Expands On NFD
Expands On NFKC
Expands On NFKD
Bidi Mirrored Glyph
Bidi Paired Bracket Type None
East Asian Width Neutral
Hangul Syllable Type Not Applicable
ISO 10646 Comment
Joining Group No_Joining_Group
Joining Type Non Joining
Line Break Unknown
Numeric Type None
Numeric Value not a number
Simple Case Folding Glyph for U+FFFF Noncharacter*
Script Extension Unknown
Vertical Orientation R