Web

C3 Playground

Last updated 2026-09-24 · benchmark measured 2026-09-24 — deterministic & reproducible

In-browser C3 compiler and interactive playground. Compiles and executes C3 entirely in WebAssembly with zero backend dependencies.

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To cite this score: legit.show/s/play-c3-lang-org/2026-09-24. That address never changes; this page moves with every re-measure.

Legit.Show scored C3 Playground 62/100 on 2026-09-24, measured across all 7 frames from its public surface. legit.show/s/play-c3-lang-org/2026-09-24

Is C3 Playground production-ready?

Legit.Show scores C3 Playground 62 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on C3 Playground (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Reliability; its weakest is Privacy. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

• Performance — 56/100
• Accessibility — 88/100
• Security — 25/100
  How this compares across the catalogue: The Web Security Baseline
• Privacy — 25/100
  How this compares across the catalogue: The Privacy Gap
• Reliability — 92/100
• Standards — 89/100
• Discoverability — 60/100

What we measured

• No Content-Security-Policy and no HSTS.
• Served over HTTPS with a valid certificate.
• Real Lighthouse performance run — 130 ms to first byte.
• Returns a proper 404 for unknown routes.
• 0 of 0 sampled routes reachable.
• No privacy policy found.
• Sets cookies / loads scripts with no consent prompt.
• Discoverable: OpenGraph image.

Who built it

product account @C3Lang

Sources and updates

Description

Taken from play.c3-lang.org's own website on 2026-09-24.

Benchmark

Measured by Legit.Show from the live site, the way any visitor sees it — with no access to its code or accounts. Same method for every product, and no AI decides the score. Last checked 2026-09-24.

Put together from public information, without C3 Playground's involvement. If anything here is wrong, tell us and a person will check it.

Visit C3 Playground → · How this was measured →