Character Encoding
UTF-8
0xF30x9F0xBF0xBE
UTF-16
0xDB3F0xDFFE
UTF-32
0x000DFFFE
Copy & Paste Codes
Unicode Escape
\u{DFFFE}
HTML Entity (Decimal)

HTML Entity (Hex)

CSS Code
\DFFFE
JavaScript/JSON
String.fromCodePoint(0xDFFFE)
Python
chr(0xDFFFE)
Ruby/PHP
chr(0xDFFFE)
Unix, C, PHP, JAVA
0xDFFFE
Perl
chr(0xDFFFE)
URL Encoded
%dfffe