U+FFFF "￿" Specials Unicode Character

U+FFFF "￿" Specials is a noncharacter specifically reserved for internal use and is defined as such in the Unicode Standard, meaning it is not intended for normal text interchange between applications. Its primary purpose is to serve as a sentinel value or a placeholder in programming contexts, such as marking the end of a list, indicating an error condition, or representing a guarantee that no real character will ever be assigned to that code point. As part of the Specials block, U+FFFF is deliberately invalid for encoding meaningful content, ensuring compatibility and safeguarding against misinterpretation in data processing systems.

General Properties

Code Point	U+FFFF
Version Added	1.1
Block	Specials
General Category	Unassigned
Canonical Combining Class	Not Reordered
Bidirectional Class	Boundary Neutral

Encodings

HTML Decimal Encoding	
HTML Hex Encoding	
UTF-8 Encoding	0xEF 0xBF 0xBF
UTF-16 Encoding	0xFFFF
UTF-32 Encoding	0x0000FFFF
C/C++/Java Escape	\uffff

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Unknown
Script	Unknown
Script Extensions	Unknown
Indic Syllabic Category	Other
Vertical Orientation	Rotated
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	Other
Noncharacter Code Point	Yes