Description
Extract one UTF-8 continuation octet's six payload bits.
Unicode code points, UTF-16 units and UTF-8 octets are different representations. A local escape or byte check can report useful structure without establishing that an entire encoded string is well formed.
Extract one UTF-8 continuation octet's six payload bits.
When to use this tool
Use Decoding: UTF-8 Continuation Payload Bits when inspecting the stated scalar, escape or byte-layout component.
How to use the tool and how it works
- Enter byte. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read result. Expand result to inspect the returned fields.
Extract one UTF-8 continuation octet's six payload bits. Require whole byte in [128,191]; payload = byte-128.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| byte | One numeric octet, from 0 through 255. | Required. Safe integer. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| result | Returned object; expand its named members below. | Required. Object. |
| result.payload | Payload | Calculated result member: number. |
{
"input": {
"byte": 172
},
"output": {
"result": {
"payload": 44
}
}
}Limitations and assumptions
- This local bit extraction does not establish a valid UTF-8 sequence or Unicode scalar.
- Outputs are nested inside result. Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use a conforming complete decoder for strings and distinguish Unicode scalar validity from source-language or HTML error recovery.
References
Similar or alternative tools
- Decoding: UTF-8 Leading Byte Sequence Length
Inspect a UTF-8 lead octet's expected sequence length.
- Decoding: Utf16 Surrogate Pair Scalar
Decode an ordered UTF-16 surrogate pair to a scalar.