UnicodeCharactercom
［
U+FF3B · FULLWIDTH LEFT SQUARE BRACKET

Fullwidth Left Square Bracket

  • CodepointU+FF3B
  • NameFULLWIDTH LEFT SQUARE BRACKET
  • Decimal65339
  • BlockHalfwidth and Fullwidth Forms (U+FF00–U+FFEF)
  • Plane0 — Basic Multilingual Plane
  • ScriptCommon
  • CategoryPs — Open Punctuation
  • Unicode version1.1 (1993)
  • Bidi classON — Other Neutral
  • Combining class0
  • East Asian widthF — Fullwidth
  • MirroredYes

About this character

U+FF3B (［) is FULLWIDTH LEFT SQUARE BRACKET, an opening bracket or punctuation mark in the Halfwidth and Fullwidth Forms block. Its script is Common: it is shared by many writing systems rather than belonging to one. It was added in Unicode 1.1 (1993).

It is a fullwidth form of U+005B [ (compatibility decomposition <wide>). NFC and NFD leave it alone, but NFKC and NFKD replace it with U+005B [. Search engines, identifier checks and username systems that apply NFKC will treat the two as the same text.

It is a mirrored character: in right-to-left text it is displayed as its mirror image, which matches U+FF3D ］.

Its East Asian Width is Fullwidth, so terminals and monospaced layouts give it two columns.

How to type ［

§

Encodings & escapes

UTF-8 encoder →
UTF-8EF BC BB3 bytes
UTF-16FF3B1 code unit
UTF-320000FF3B4 bytes
HTML decimal&#65339;
HTML hex&#xFF3B;
CSS\FF3Bin content: "…"
JavaScript\uFF3B
JSON\uFF3B
Python\uFF3B
Python\N{FULLWIDTH LEFT SQUARE BRACKET}by name
Java / C#\uFF3B
C / C++\uFF3Buniversal character name
Rust / Swift / PHP\u{FF3B}
Go\uFF3B
Ruby\uFF3B
Excel / Sheets=UNICHAR(65339)
URL-encoded%EF%BC%BBpercent-encoded UTF-8
§

Normalization forms

Normalizer →
NFCunchanged
NFDunchanged
NFKCU+005B [
NFKDU+005B [
§

Looks similar

Characters that Unicode’s security data (UTS #39 confusables) lists as visually confusable with this one. Useful for spotting lookalike spoofing in URLs and usernames.

U+0028(Left Parenthesis U+2768❨Medium Left Parenthesis Ornament U+2772❲Light Left Tortoise Shell Bracket Ornament U+3014〔Left Tortoise Shell Bracket U+FD3E﴾Ornate Left Parenthesis
§

Nearby in Halfwidth and Fullwidth Forms

All in block →
U+FF35ＵFullwidth Latin Capital Letter U U+FF36ＶFullwidth Latin Capital Letter V U+FF37ＷFullwidth Latin Capital Letter W U+FF38ＸFullwidth Latin Capital Letter X U+FF39ＹFullwidth Latin Capital Letter Y U+FF3AＺFullwidth Latin Capital Letter Z U+FF3C＼Fullwidth Reverse Solidus U+FF3D］Fullwidth Right Square Bracket U+FF3E＾Fullwidth Circumflex Accent U+FF3F＿Fullwidth Low Line U+FF40｀Fullwidth Grave Accent U+FF41ａFullwidth Latin Small Letter A