Is OpenDiagram secure?

Legit.Show measured OpenDiagram's Security frame at 45/100. Security headers present: HSTS. Served over HTTPS with a valid certificate.

How does Legit.Show measure OpenDiagram?

Legit.Show scores seven frames — Performance, Accessibility, Security, Privacy, Reliability, Standards and Discoverability — deterministically from the public surface (URL, HTTP headers, real Lighthouse), with no LLM in the scoring path. See legit.show/methodology.

Developer Tools

OpenDiagram

Last updated 2026-09-30 · benchmark measured 2026-09-30 — deterministic & reproducible

Open-source AI tool that turns plain-text descriptions into editable software architecture diagrams.

88/100

7/7 frames

Top 19% of 14,512 measured · #3 of 10 in architecture diagram tool

Legit Benchmark — the simple average of 7 measured frames. Frames we could not measure are left out of the average, never counted as zero. Every frame is shown below with its evidence.

Checked 2026-09-30 · scores move as sites change

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To cite this score: legit.show/s/opendiagram-ink/2026-09-30. That address never changes; this page moves with every re-measure.

Legit.Show scored OpenDiagram 88/100 on 2026-09-30, measured across all 7 frames from its public surface. legit.show/s/opendiagram-ink/2026-09-30

Is OpenDiagram production-ready?

Legit.Show scores OpenDiagram 88 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on OpenDiagram (public-surface assessment), measured from the public surface with no LLM in the scoring path. Its strongest frame is Privacy; its weakest is Security. Every frame it averages is published with its evidence on the Legit.Show listing.

The 7 Frames

Performance — 82/100
Accessibility — 96/100
Security — 45/100
How this compares across the catalogue: The Web Security Baseline
Privacy — 100/100
How this compares across the catalogue: The Privacy Gap
Reliability — 100/100
Standards — 92/100
Discoverability — 100/100

What we measured

Security headers present: HSTS.
No Content-Security-Policy.
Served over HTTPS with a valid certificate.
Real Lighthouse performance run — 156 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

Software architects · System designers · Development teams · Software engineers

Pricing

Free to try

Sources and updates

Description: Taken from opendiagram.ink's own website on 2026-09-30.
Operator: OpenDiagram, as named in opendiagram.ink's terms, privacy page or footer.
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 2026-09-30.

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

Visit OpenDiagram → · Alternatives to OpenDiagram → · How this was measured →