SPDX Open Source License Identifier Auditor
Validates software package license expressions against the official SPDX License List.
Notice: engineering verification utility. Use test or de-identified data and verify results independently before relying on them.
How it works
Standard: SPDX License List Version 3.22
Formula: Match string against standard SPDX identifiers (MIT, Apache-2.0, GPL-3.0-only, etc.)
Checks: Valid SPDX identifier acronym
Calculated locally in browser memory; nothing leaves your browser.
Deterministic local-first client-side execution. Provided as-is without warranty.