UTF-8
Sign in to saveUTF-8 is a character encoding standard used for electronic communication. Defined by the Unicode Standard, the name is derived from Unicode Transformation Format 8-bit. As of 2026, almost every webpage (99%) is transmitted as UTF-8.
Key facts
- Character encoding.name
- UTF-8
- Character encoding.standard
- Unicode Standard
- Character encoding.classification
- Unicode Transformation Format, extended ASCII, variable-length encoding
- Character encoding.encodes
- ISO/IEC 10646 (Unicode)
- Character encoding.extends
- ASCII
- Character encoding.prev
- UTF-1
via Wikipedia infobox
Article
13 sectionsContents
- History
- Description
- Overlong encodings
- Error handling
- Surrogates
- Byte map
- Byte-order mark
- Comparison to UTF-16
- Implementations and adoption
- Standards
- See also
- References
- External links
UTF-8 is a character encoding standard used for electronic communication. Defined by the Unicode Standard, the name is derived from Unicode Transformation Format 8-bit. As of 2026, almost every webpage (99%) is transmitted as UTF-8.
UTF-8 supports all 1,112,064 valid Unicode code points using a variable-width encoding of one to four one-byte (8-bit) code units.