CORS Allow-Origin Checker
Check only whether Access-Control-Allow-Origin matches a supplied request Origin, including the wildcard restriction for credentialed requests.
Description
Check only whether Access-Control-Allow-Origin matches a supplied request Origin, including the wildcard restriction for credentialed requests.
CORS Allow-Origin Checker is a focused tool for the following task. Check only whether Access-Control-Allow-Origin matches a supplied request Origin, including the wildcard restriction for credentialed requests. It reports Origin allowed from the values you provide rather than inventing measurements, coefficients, or professional judgment that are not part of the input.
When to use CORS Allow-Origin Checker
Use this text operation when its stated character encoding, token boundaries, normalization, case handling, and output format match the surrounding workflow.
- Request Origin
- Required string.
- Access-Control-Allow-Origin
- Required string.
- Credentials included
- Required boolean.
The cited overview of Cross-origin resource sharing supplies background for the terminology and domain context used by this tool.1
How CORS Allow-Origin Checker works
Check only whether Access-Control-Allow-Origin matches a supplied request Origin, including the wildcard restriction for credentialed requests. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.
- Origin allowed
- Returned boolean.
Limitations and assumptions
- Unicode normalization, locale, grapheme clusters, malformed input, ambiguous syntax, and implementation-specific conventions can change text-processing results.
- Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.
Alternative or Complementary approaches
Preserve the original text, test representative non-ASCII and malformed cases, and use a standards-aware parser or serializer when interoperability matters.
References
-
Cross-origin resource sharing — Wikipedia contributors
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