U+FF7D "ｽ" Halfwidth Katakana Letter Su Unicode Character
Unicode Version 17.0
ｽ
U+FF7D "ｽ" Halfwidth Katakana Letter Su is a typographic variant of the standard full-width katakana character ス, designed to occupy exactly half the width of a typical East Asian character box. This halfwidth form was originally developed for use in early computer systems and text terminals that required efficient use of limited screen space, particularly when mixing Japanese text with monospaced ASCII characters. In modern usage, it appears in historical digital contexts, such as legacy terminal displays, old game text, or specific encodings like Shift JIS, where maintaining a uniform character width was essential for alignment and data transmission.
General Properties
| Code Point | U+FF7D |
| Version Added | 1.1 |
| Name | Halfwidth Katakana Letter Su |
| Block | Halfwidth and Fullwidth Forms |
| General Category | Other Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Narrow |
| Decomposition Mapping | "ス" U+30B9 Katakana Letter Su |
Encodings
| HTML Decimal Encoding | ｽ |
| HTML Hex Encoding | ｽ |
| UTF-8 Encoding | 0xEF 0xBD 0xBD |
| UTF-16 Encoding | 0xFF7D |
| UTF-32 Encoding | 0x0000FF7D |
| C/C++/Java Escape | \uff7d |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Ideographic |
| East Asian Width | Halfwidth |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "ス" U+30B9 Katakana Letter Su |
| NFKC Simple Casefold | "ス" U+30B9 Katakana Letter Su |
| Script | Katakana |
| Script Extensions | Katakana |
| Indic Syllabic Category | Other |
| ID Start | Yes |
| XID Start | Yes |
| ID Continue | Yes |
| XID Continue | Yes |
| Alphabetic | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Katakana |
| Sentence Break | OLetter |