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Content Security Policy Report Only Label Tool

Compute content security policy report only label from explicit bounded inputs.

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Description

Lowercase headerName and return recognized for content-security-policy or content-security-policy-report-only.

Web protocol data has several layers: a complete message or URL, individual fields or components, and the literal tokens within them. Delimiter presence, spelling, comparison rules, and parser normalization can affect results. A check of one component needs its stated scope before it can be used in a larger parser or policy decision.

Lowercase headerName and return recognized for content-security-policy or content-security-policy-report-only.

When to use this tool

Use Content Security Policy Report Only Label when you need one stated URL, header, or protocol-component check in a diagnostic or parser workflow. Supply the input level specified below.

How to use the tool and how it works

  1. Enter headerName. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read reportOnly, recognized. Inspect reportOnly, recognized before interpreting the associated values.

Lowercase headerName and return recognized for content-security-policy or content-security-policy-report-only. Set reportOnly only for the latter.1

Input fieldMeaning and unitsAccepted input
headerNameHeader NameRequired. Text; maximum UTF-16 length 8192.
Output fieldInterpretationReturned shape
reportOnlyReport OnlyRequired. Boolean.
recognizedRecognizedRequired. Boolean.
json
{
  "input": {
    "headerName": "Content-Security-Policy-Report-Only"
  },
  "output": {
    "reportOnly": true,
    "recognized": true
  }
}

Limitations and assumptions

  • Whitespace is not trimmed and the field value is not inspected. The label does not validate a policy, model violations, or prove any browser enforcement behavior.
  • The field tables state structural bounds; the mechanics also specify cross-field constraints. Malformed inputs and unsupported domains cause errors. A successful false flag, empty branch value, or zero placeholder has the meaning stated above and is distinct from an input error.

Alternative or Complementary methods

Use a complete URL or header parser when the task involves an entire field or message. Test actual browser, server, or cache behavior separately when a security or protocol decision depends on more than this component.

References

  1. Calculation and input contract: web/content-security-policy-report-only-label — tool.io

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