Core web performance assessment targeting load time and user experience, covering image optimization, bundle sizing, code splitting, caching, and rendering strategies.
22
Total Checks
3
Delivery Formats
3
Categories
5
Versions
Quality hardening: added counting/enumeration patterns and numeric thresholds to all 22 checks, added backtick-quoted detail-on-fail examples with X-of-Y reporting, added anti-sycophancy guardrails (Do NOT pass when, Before evaluating extract and quote, Report even on pass), added 3 cross-references to related audits (seo-fundamentals, security-headers, performance-optimization), tightened adversarial manifests to exact tolerances
2026-04-02
Added Step 3 submission instructions to chunked format; improved Step 3 in full format (paste URL is now primary submission method)
2026-03-01
Adversarial testing improvements: clarify bundle analysis for installed-vs-imported deps, fix App Router detection patterns, tighten image-format threshold, bump third-party-scripts severity to medium, add skip criteria for static sites
2026-02-27
Hardened curl commands with -sS -L flags for redirect following and error visibility. Added response validation guidance to Step 3.
2026-02-23
Initial release
2026-02-20
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