Encoding API Encodings

The constructors for TextDecoder and TextDecoderStream can be passed an optional label, representing the encoding to be used. The default is UTF-8.

The following table lists all encoding names and labels that user agents must support, as defined in the Encoding Spec. These are generally applicable anywhere character encodings are used.

Label Encoding
"unicode-1-1-utf-8", "utf-8", "utf8" 'utf-8'
"866", "cp866", "csibm866", "ibm866" ibm866
"csisolatin2", "iso-8859-2", "iso-ir-101", "iso8859-2", "iso88592", "iso_8859-2", "iso_8859-2:1987", "l2", "latin2" iso-8859-2
"csisolatin3", "iso-8859-3", "iso-ir-109", "iso8859-3", "iso88593", "iso_8859-3", "iso_8859-3:1988", "l3", "latin3" iso-8859-3
"csisolatin4", "iso-8859-4", "iso-ir-110", "iso8859-4", "iso88594", "iso_8859-4", "iso_8859-4:1988", "l4", "latin4" iso-8859-4
"csisolatincyrillic", "cyrillic", "iso-8859-5", "iso-ir-144", "iso88595", "iso_8859-5", "iso_8859-5:1988" iso-8859-5
"arabic", "asmo-708", "csiso88596e", "csiso88596i", "csisolatinarabic", "ecma-114", "iso-8859-6", "iso-8859-6-e", "iso-8859-6-i", "iso-ir-127", "iso8859-6", "iso88596", "iso_8859-6", "iso_8859-6:1987" iso-8859-6
"csisolatingreek", "ecma-118", "elot_928", "greek", "greek8", "iso-8859-7", "iso-ir-126", "iso8859-7", "iso88597", "iso_8859-7", "iso_8859-7:1987", "sun_eu_greek" iso-8859-7
"csiso88598e", "csisolatinhebrew", "hebrew", "iso-8859-8", "iso-8859-8-e", "iso-ir-138", "iso8859-8", "iso88598", "iso_8859-8", "iso_8859-8:1988", "visual" iso-8859-8
"csiso88598i", "iso-8859-8-i", "logical" iso-8859-8i
"csisolatin6", "iso-8859-10", "iso-ir-157", "iso8859-10", "iso885910", "l6", "latin6" iso-8859-10
"iso-8859-13", "iso8859-13", "iso885913" iso-8859-13
"iso-8859-14", "iso8859-14", "iso885914" iso-8859-14
"csisolatin9", "iso-8859-15", "iso8859-15", "iso885915", "l9", "latin9" iso-8859-15
"iso-8859-16" iso-8859-16
"cskoi8r", "koi", "koi8", "koi8-r", "koi8_r" koi8-r
"koi8-u" koi8-u
"csmacintosh", "mac", "macintosh", "x-mac-roman" macintosh
"dos-874", "iso-8859-11", "iso8859-11", "iso885911", "tis-620", "windows-874" windows-874
"cp1250", "windows-1250", "x-cp1250" windows-1250
"cp1251", "windows-1251", "x-cp1251" windows-1251
"ansi_x3.4-1968", "ascii", "cp1252", "cp819", "csisolatin1", "ibm819", "iso-8859-1", "iso-ir-100", "iso8859-1", "iso88591", "iso_8859-1", "iso_8859-1:1987", "l1", "latin1", "us-ascii", "windows-1252", "x-cp1252" windows-1252
"cp1253", "windows-1253", "x-cp1253" windows-1253
"cp1254", "csisolatin5", "iso-8859-9", "iso-ir-148", "iso8859-9", "iso88599", "iso_8859-9", "iso_8859-9:1989", "l5", "latin5", "windows-1254", "x-cp1254" windows-1254
"cp1255", "windows-1255", "x-cp1255" windows-1255
"cp1256", "windows-1256", "x-cp1256" windows-1256
"cp1257", "windows-1257", "x-cp1257" windows-1257
"cp1258", "windows-1258", "x-cp1258" windows-1258
"x-mac-cyrillic", "x-mac-ukrainian" x-mac-cyrillic
"chinese", "csgb2312", "csiso58gb231280", "gb2312", "gb_2312", "gb_2312-80", "gbk", "iso-ir-58", "x-gbk" gbk
"gb18030" gb18030
"hz-gb-2312" hz-gb-2312
"big5", "big5-hkscs", "cn-big5", "csbig5", "x-x-big5" big5
"cseucpkdfmtjapanese", "euc-jp", "x-euc-jp" euc-jp
"csiso2022jp", "iso-2022-jp" iso-2022-jp
"csshiftjis", "ms_kanji", "shift-jis", "shift_jis", "sjis", "windows-31j", "x-sjis" shift-jis
"cseuckr", "csksc56011987", "euc-kr", "iso-ir-149", "korean", "ks_c_5601-1987", "ks_c_5601-1989", "ksc5601", "ksc_5601", "windows-949" euc-kr
"csiso2022kr", "iso-2022-kr" iso-2022-kr
"utf-16be" utf-16be
"utf-16", "utf-16le" utf-16le
"x-user-defined" 'x-user-defined'
"iso-2022-cn", "iso-2022-cn-ext" 'replacement'