Developer Tools
StackBlitz
Last updated 2026-08-03 · benchmark measured 2026-08-03 — deterministic & reproducible
StackBlitz provides instant browser-based development environments for web projects.
Is StackBlitz production-ready?
Legit.Show scores StackBlitz 75 out of 100 — the simple average of its 6 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on StackBlitz (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Security. 6 of the seven frames returned a score; Accessibility was not measurable on this service and is recorded as null — not as zero. Every frame it averages is published with its evidence on the Legit.Show listing.
The 7 Frames
- Performance — 80/100
- Accessibility — not measurable on this service (null — not scored as 0)
- Security — 45/100
- Privacy — 75/100
- Reliability — 100/100
- Standards — 75/100
- Discoverability — 75/100
What we measured
- Security headers present: X-Content-Type-Options, Referrer-Policy.
- No Content-Security-Policy and no HSTS.
- Served over HTTPS with a valid certificate.
- Real Lighthouse performance run — 175 ms to first byte.
- Returns a proper 404 for unknown routes.
- 3 of 3 sampled routes reachable.
- Has a reachable privacy policy.
- Sets cookies / loads scripts with no consent prompt.
Who it's for
Frontend teams · Product teams · Web developers · Companies
Pricing
Free Personal plan (unlimited public projects); Teams plan for GitHub organizations; Enterprise plans available