Source: Noto Sans

U+FFFF Noncharacter *

U+FFFF was added in Unicode version 2.0 in 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 has no script assigned.

The glyph is not a composition. It has no designated width in East Asian texts. In bidirectional text it acts as Boundary Neutral. When changing direction it is not mirrored. U+FFFF does not participate in line break calculations.

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.

Representations

System	Representation
Nº	65535
UTF-8	EF BF BF
UTF-16	FF FF
UTF-32	00 00 FF FF
URL-Quoted	%EF%BF%BF
HTML hex reference
Wrong windows-1252 Mojibake	ï¿½
Encoding: GB18030 (hex bytes)	84 31 A4 39

Elsewhere

Complete Record

Property	Value
Age (age)	2.0 (1996)
Unicode Name (na)	—
Unicode 1 Name (na1)	—
General Category (gc)	Unassigned
Script (sc)	Unknown
Bidirectional Category (bc)	Boundary Neutral
Combining Class (ccc)	Not Reordered
Decomposition Type (dt)	none
Decomposition Mapping (dm)	Noncharacter*
Lowercase (Lower)	✘
Simple Lowercase Mapping (slc)	Noncharacter*
Lowercase Mapping (lc)	Noncharacter*
Uppercase (Upper)	✘
Simple Uppercase Mapping (suc)	Noncharacter*
Uppercase Mapping (uc)	Noncharacter*
Simple Titlecase Mapping (stc)	Noncharacter*
Titlecase Mapping (tc)	Noncharacter*
Case Folding (cf)	Noncharacter*
ASCII Hex Digit (AHex)	✘
Alphabetic (Alpha)	✘
Bidi Control (Bidi_C)	✘
Bidi Mirrored (Bidi_M)	✘
Composition Exclusion (CE)	✘
Case Ignorable (CI)	✘
Changes When Casefolded (CWCF)	✘
Changes When Casemapped (CWCM)	✘
Changes When NFKC Casefolded (CWKCF)	✘
Changes When Lowercased (CWL)	✘
Changes When Titlecased (CWT)	✘
Changes When Uppercased (CWU)	✘
Cased (Cased)	✘
Full Composition Exclusion (Comp_Ex)	✘
Default Ignorable Code Point (DI)	✘
Dash (Dash)	✘
Deprecated (Dep)	✘
Diacritic (Dia)	✘
Emoji Modifier Base (EBase)	✘
Emoji Component (EComp)	✘
Emoji Modifier (EMod)	✘
Emoji Presentation (EPres)	✘
Emoji (Emoji)	✘
Extender (Ext)	✘
Extended Pictographic (ExtPict)	✘
FC NFKC Closure (FC_NFKC)	—
Grapheme Cluster Break (GCB)	Any
Grapheme Base (Gr_Base)	✘
Grapheme Extend (Gr_Ext)	✘
Grapheme Link (Gr_Link)	✘
Hex Digit (Hex)	✘
Hyphen (Hyphen)	✘
ID Continue (IDC)	✘
ID Start (IDS)	✘
IDS Binary Operator (IDSB)	✘
IDS Trinary Operator and (IDST)	✘
Ideographic (Ideo)	✘
Indic Positional Category (InPC)	NA
Indic Syllabic Category (InSC)	Other
Jamo Short Name (JSN)	—
Join Control (Join_C)	✘
Logical Order Exception (LOE)	✘
Math (Math)	✘
Noncharacter Code Point (NChar)	✔
NFC Quick Check (NFC_QC)	1
NFD Quick Check (NFD_QC)	1
NFKC Casefold (NFKC_CF)	Noncharacter*
NFKC Quick Check (NFKC_QC)	1
NFKD Quick Check (NFKD_QC)	1
Other Alphabetic (OAlpha)	✘
Other Default Ignorable Code Point (ODI)	✘
Other Grapheme Extend (OGr_Ext)	✘
Other ID Continue (OIDC)	✘
Other ID Start (OIDS)	✘
Other Lowercase (OLower)	✘
Other Math (OMath)	✘
Other Uppercase (OUpper)	✘
Prepended Concatenation Mark (PCM)	✘
Pattern Syntax (Pat_Syn)	✘
Pattern White Space (Pat_WS)	✘
Quotation Mark (QMark)	✘
Regional Indicator (RI)	✘
Radical (Radical)	✘
Sentence Break (SB)	Other
Soft Dotted (SD)	✘
Sentence Terminal (STerm)	✘
Terminal Punctuation (Term)	✘
Unified Ideograph (UIdeo)	✘
Variation Selector (VS)	✘
Word Break (WB)	Other
White Space (WSpace)	✘
XID Continue (XIDC)	✘
XID Start (XIDS)	✘
Expands On NFC (XO_NFC)	✘
Expands On NFD (XO_NFD)	✘
Expands On NFKC (XO_NFKC)	✘
Expands On NFKD (XO_NFKD)	✘
Bidi Mirrored Glyph (bmg)	—
Bidi Paired Bracket Type (bpt)	None
East Asian Width (ea)	neutral
Hangul Syllable Type (hst)	Not Applicable
ISO 10646 Comment (isc)	—
Joining Group (jg)	No_Joining_Group
Joining Type (jt)	Non Joining
Line Break (lb)	Unknown
Numeric Type (nt)	none
Numeric Value (nv)	not a number
Simple Case Folding (scf)	Noncharacter*
Script Extension (scx)	Unknown
Vertical Orientation (vo)	R