npm, pnpm & Yarn Lockfile Analyzer

Analyze a pasted package-lock.json, pnpm-lock.yaml, or yarn.lock excerpt to count resolved packages and identify package names pinned to multiple versions.

Runs locally in your browser
This tool processes all data locally in your browser.
LockfilePaste package-lock.json, pnpm-lock.yaml, yarn.lock, or a compact lockfile excerpt. The browser counts resolved packages and duplicate versions.
Resolved packages
Recent tools: