Developer Tools
normbill
Last updated 2026-07-23 · benchmark measured 2026-08-09 — deterministic & reproducible
API for generating, validating, and parsing XRechnung and ZUGFeRD e-invoices.
Is normbill production-ready?
Legit.Show scores normbill 88 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on normbill (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Security; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 93/100
- Accessibility — 96/100
- Security — 100/100
- Privacy — 25/100
- Reliability — 100/100
- Standards — 100/100
- Discoverability — 100/100
What we measured
- Security headers present: CSP, HSTS, X-Frame-Options, X-Content-Type-Options, Referrer-Policy.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 212 ms to first byte.
- Returns a proper 404 for unknown routes.
- 3 of 3 sampled routes reachable.
- No privacy policy found.
- Sets cookies / loads scripts with no consent prompt.
- Discoverable: structured data, sitemap, OpenGraph image, canonical URL.
Who built it
Michael Sathya Gorski (@GorskiSathya)
Who it's for
B2B developers · SaaS platforms · German businesses · E-invoice integrators · Invoice automation teams
Pricing
Free (25 documents/month), Starter €49/mo (500 documents), Growth €149/mo (2000 documents), Scale €399/mo (10000 documents), Platform from €990/mo
Visit normbill → · Alternatives to normbill → · How this was measured →