This is the Unicode character HIGH OCTET PRESET, code point U+0081 (decimal 129) in the Latin-1 Supplement block, added in Unicode 1.1. In HTML write , and in UTF-8 it is the 2 bytes C2 81.
Codes
| Where | How to write it |
|---|---|
| Code point | U+0081 |
| Decimal | 129 |
| UTF-8 bytes | C2 81 |
| UTF-16 (big-endian) | 0081 |
| UTF-32 | 00000081 |
| HTML | not valid in HTML (a numeric reference to it is a parse error) |
| CSS | \81 |
| JavaScript | \u0081 |
| JSON | \u0081 |
| Python | \u0081 |
| Python by name | \N{HIGH OCTET PRESET} |
| Java, C# | \u0081 |
| Rust, Swift | \u{81} |
| Go, C, C++ | \u0081 |
| URL (percent-encoded) | %C2%81 |
JavaScript and JSON strings store text as UTF-16, so this character is one code unit long. Python 3 strings count code points, so its length there is 1.
Properties
| Property | Value |
|---|---|
| Name | HIGH OCTET PRESET |
| Code point | U+0081 (decimal 129) |
| Block | Latin-1 Supplement (U+0080–U+00FF) |
| General category | Cc: Control character |
| Script | Common |
| Bidirectional class | BN: Boundary neutral |
| Mirrored in right-to-left text | No |
| First in Unicode version | 1.1 |
Nearby in Latin-1 Supplement
- U+0080 Padding Character
- U+0082 Break Permitted Here
- U+0083 No Break Here
- U+0084 Index
- U+0085 Next Line
- U+0086 Start Of Selected Area
- U+0087 End Of Selected Area
- U+0088 Character Tabulation Set
- U+0089 Character Tabulation With Justification
All 128 characters: Latin-1 Supplement.
Official reference
Questions people ask
- What is the HTML code for HIGH OCTET PRESET?
- Use  (decimal) or  (hex).
- What is the UTF-8 encoding of U+0081?
- C2 81 (hex), 2 bytes. In a URL it is %C2%81.
- How do I write U+0081 in JavaScript or Python?
- JavaScript: \u0081. Python: \u0081.
Source
Unicode Character Database 18.0.0 (Unicode License v3); HTML entity names from the WHATWG HTML Standard (CC BY 4.0). The encodings above are computed from the code point and checked against Python's encoders. How the character looks depends on your fonts.
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