REPLACEMENT CHARACTER

Property Value
Codepoint U+FFFD
Literal Character �
Name REPLACEMENT CHARACTER
Sketch
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Control Character no
Block Linear B Syllabary
Subblock Extended Arabic letter for Parkari
UTF-8 byte encoding ef bf bd
UTF-16 byte encoding ff fd (big endian)
HTML Entity �
Perl string literal \x{FFFD}
Comments
  • used to replace an incoming character whose value is unknown or unrepresentable in Unicode
  • compare the use of 001A as a control character to indicate the substitute function
  • may be used to detect byte order by contrast with FEFF
See Also U+2BD1: uncertainty sign
U+1FBC4: negative squared question mark
U+FEFF: zero width no-break space