BundleCheck

Analyze npm package bundle size with deterministic output and fast cached responses.

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    Request beta API key

    The browser UI is free with no sign-up required. Both tiers share the same rate limits — a beta key gives you an isolated quota tied to your key rather than your IP, which matters for CI/CD and server-side use.

    Free · No key needed
    • Browser UI, unlimited use
    • 300 checks / hour
    • 3,000 checks / day
    • Quota shared across your IP
    Beta API key
    • Programmatic API access
    • 300 checks / hour
    • 3,000 checks / day
    • Quota isolated to your key

    We review requests within a few business days and email the key directly. No accounts required.

    Request beta API access