ISO/IEC 8859-1

ISO/IEC 8859-1, commonly referred to as Latin-1, is a character encoding in the ISO/IEC 8859 series of ASCII-based standard character encodings. It encodes 191 characters from the Latin script. It is the basis for many popular 8-bit character sets and the first 256 code points in Unicode.

It is used throughout the Americas, Western Europe, Oceania, and much of Africa, and is the most declared single-byte character encoding for web pages; however, per the HTML5 standard, web browsers interpret it as the superset Windows-1252, so these documents may include characters from that set.

ISO-8859-1 is the Internet Assigned Numbers Authority (IANA) preferred name for this standard when supplemented with the C0 and C1 control codes from ISO/IEC 6429. The following other aliases are registered: iso-ir-100, csISOLatin1, latin1, l1, IBM819, Code page 28591 a.k.a. Windows-28591 is used for it in Windows. IBM calls it code page 819 or CP819 (CCSID 819). Oracle calls it WE8ISO8859P1.