U+FFFD
REPLACEMENT CHARACTER - when a character cannot be displayed (e.g., decoding an erroneous UTF-8 sequency), this code point steps into the breach.
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- 2026-10-10
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similar
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U+D800 codepoints.net
to U+DFFF - surrogate code points. They are only reserved to ease UTF-16 encoding.
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U+10FFFF codepoints.net
(non-character) - last code point. The whole rest of its plane apart from U+10FFFE, the code points in the 0x100000-0x10FFFD range, are private use characters, guaranteed to be never filled by a future Unicode standard.
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U+F8FF codepoints.net
PRIVATE USE CODEPOINT - this private use code point is rendered as Apple logo on many Apple devices.
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U+FF03 codepoints.net
FULLWIDTH NUMBER SIGN - it is the "Japanese Hashtag" ＃. Sites like Twitter accept it as equivalent to the regular # (U+0023).
Code Points › Standalone Code Points: “REPLACEMENT CHARACTER - when a character cannot be displayed (e.g., decoding an erroneous UTF-8 sequency), this code point steps into the breach.”