This character is a Other Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. Its width in East Asian texts is determined by its context. It can be displayed wide or narrow. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. If its East Asian Width is “narrow”, U+FFFD forms a word with similar characters, which prevents a line break inside it. Otherwise it allows line breaks around it, except in some numeric contexts.
Reprezentacje
System
Reprezentacje (click value to copy)
Nº
65533
UTF-8
EF BF BD
UTF-16
FF FD
UTF-32
00 00 FF FD
Adres URL cytowany
%EF%BF%BD
HTML hex reference
�
Błędne windows-1252 Mojibake
�
Kodowanie: GB18030 (hex bajtów)
84 31 A4 37
Kodowanie: CP290 (hex bajtów)
FE
Kodowanie: CP420 (hex bajtów)
FA
Kodowanie: CP833 (hex bajtów)
FE
AGL: Latin-5
uniFFFD
RFC 5137
\u'FFFD'
Bash and Zsh inside echo -e
\uFFFD
C and C++
\uFFFD
C#
\uFFFD
CSS
\00FFFD
Excel
=UNICHAR(65533)
Go
\uFFFD
JavaScript
\uFFFD
Modern JavaScript since ES6
\u{fffd}
JSON
\uFFFD
Java
\uFFFD
Lua
\u{FFFD}
Matlab
char(65533)
Perl
"\x{FFFD}"
PHP
\u{fffd}
PostgreSQL
U&'\FFFD'
PowerShell
`u{FFFD}
Python
\uFFFD
Ruby
\u{fffd}
Rust
\u{fffd}
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