ASCII is a 7-bit repertoire, not a Unicode encoding
The table is limited to code values 0–127. UTF-8 uses the same one-byte values for ASCII, but Unicode text outside that range is not “extended ASCII”.
Use the canonical 0–127 ASCII reference while related UTF-8 tools handle non-ASCII Unicode text.
The table is limited to code values 0–127. UTF-8 uses the same one-byte values for ASCII, but Unicode text outside that range is not “extended ASCII”.