Content & Docs

A Book Apart

Last updated 2026-07-26 · benchmark measured 2026-08-09 — deterministic & reproducible

A Book Apart book on using conversation as a model for human-centered design.

Is A Book Apart production-ready?

Legit.Show scores A Book Apart 72 out of 100 — the simple average of its 7 measured frames. Legit.Show ran its deterministic 7-Frame production-readiness benchmark on A Book Apart (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 — 87/100
• Accessibility — 95/100
• Security — 30/100
• Privacy — 25/100
• Reliability — 100/100
• Standards — 89/100
• Discoverability — 75/100

What we measured

• Security headers present: HSTS.
• No Content-Security-Policy.
• Served over HTTPS with a valid certificate.
• Real Lighthouse performance run — 1071 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.

Who built it

Jeffrey Zeldman · product account @abookapart

Who it's for

Designers · Developers · Content strategists · Product managers · UX professionals

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