Know the True Cost of Every npm Package
Instantly analyze any npm dependency's bundle size impact, gzip footprint, and tree-shaking potential. Discover lighter alternatives before they bloat your app.
Bundle Size
See minified + gzip size for any package version instantly.
Alternatives
Get ranked suggestions for lighter packages with the same API.
Tree-shaking
Know which packages support ES modules and tree-shaking.
Simple Pricing
One plan. Everything included.
- ✓ Unlimited package analyses
- ✓ Bundle size + gzip metrics
- ✓ Alternative package suggestions
- ✓ Tree-shaking compatibility check
- ✓ Export reports as JSON/CSV
- ✓ Priority support
FAQ
How does the bundle size analysis work?
We use the Bundlephobia API combined with npm registry metadata to calculate the minified and gzip-compressed size of any package, including its transitive dependencies.
Can I analyze private npm packages?
Currently we support public npm packages. Private package support via npm token authentication is on our roadmap.
How are alternative packages suggested?
Alternatives are ranked by bundle size, weekly downloads, and API compatibility signals. We surface packages that solve the same problem with a smaller footprint.