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license-checker
Open source Open SourceNode.js CLI tool for checking the licences of all installed npm packages.
About license-checker
license-checker is a Node.js CLI tool that scans a project's installed npm packages and reports the software license of each one.
Run against node_modules, it outputs a per-package breakdown of license types (MIT, Apache-2.0, GPL, etc.), which is useful for legal/compliance review before shipping a product — catching a GPL-licensed dependency in a proprietary codebase before it becomes a problem, for example.
Supports filtering by license type, excluding specific packages, and outputting in JSON, CSV, or a summary table. Commonly wired into CI pipelines as a license-compliance gate.
Run against node_modules, it outputs a per-package breakdown of license types (MIT, Apache-2.0, GPL, etc.), which is useful for legal/compliance review before shipping a product — catching a GPL-licensed dependency in a proprietary codebase before it becomes a problem, for example.
Supports filtering by license type, excluding specific packages, and outputting in JSON, CSV, or a summary table. Commonly wired into CI pipelines as a license-compliance gate.
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