SPDX Expression Validator
Validate a common SPDX license expression and report unknown identifiers. Runs locally and returns a reviewable report.
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Input is limited to 200000 characters. Results are computed locally and exported as JSON. Up to 1,000,000 characters. Review the settings before running.
Your result
How to use SPDX Expression Validator
- Enter the expression or range.
- Add any optional values shown.
- Run the validator and download the JSON report.
Review the result
This tool reports bounded local evidence and does not change your source.