U+303F "〿" Ideographic Half Fill Space Unicode Character

U+303F "〿" Ideographic Half Fill Space is a typographic symbol primarily used in East Asian text processing, particularly within Chinese, Japanese, and Korean (CJK) typesetting. It represents a blank space that is exactly half the width of a standard ideographic character, serving as a precise spacing tool to align text or fill gaps in monospaced or grid-based layouts. Unlike typical whitespace characters, which collapse or vary in width, this character is a visible glyph that appears as a small square in some fonts but functions as a fixed-width space in others. It is often employed in archival reproduction, punctuation formatting, or to indicate missing or obscured content in legacy digital texts, maintaining the structural integrity of a line while conserving codepoint usage.

General Properties

Code Point	U+303F
Version Added	1.1
Name	Ideographic Half Fill Space
Block	CJK Symbols and Punctuation
General Category	Other Symbol
Canonical Combining Class	Not Reordered
Bidirectional Class	Other Neutral

Encodings

HTML Decimal Encoding	〿
HTML Hex Encoding	〿
UTF-8 Encoding	0xE3 0x80 0xBF
UTF-16 Encoding	0x303F
UTF-32 Encoding	0x0000303F
C/C++/Java Escape	\u303f

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Ideographic
Script	Common
Script Extensions	Han
Indic Syllabic Category	Other
Vertical Orientation	Upright
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	Other