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This comparison does not rank or certify resources. Client labels are declared targets, not compatibility test results. Recorded outcomes can include passes and failures; they cover only the stated scenario and current package.

Web & HTML

Web Performance Measurement Workflow

Plan field and lab measurements, localize bottlenecks and retest under comparable conditions.

Purpose
Web performance measurement
Author / publisher
Addy Osmani
License
MIT · License guidance
Version
afa8da942115.bb1
Access
Free download. External tools and services may have separate costs.
Declared clients
Claude Code, Codex, Cursor

Source & package

Inspect the original source ↗

8 files · 0 script/code files. License file detected.

Current package SHA-2564354caf84e13b29cf1572588a142fc9d1acdab59cb1672fa4b1962101775270d

Tools & requirements

A runnable site plus trace/lab tools; real-user prioritization requires eligible CrUX data or your own RUM setup. Provider API credentials and consent/privacy settings are separate responsibilities.

Independent MIT project maintained by Addy Osmani; not official Google guidance or certification. The package does not provide Chrome DevTools MCP, Lighthouse, credentials, user telemetry or a model. Tool, model and infrastructure access may have separate costs. Check current W3C and Google documentation; automated checks cover a subset of issues and cannot establish WCAG conformance, application security, search rankings or field Core Web Vitals. Full skill/agent runtime evaluation has not been performed. Packaging links are adapted; required cross-skill reference documents are bundled, while related SKILL.md links open pinned upstream source and do not install other skills.

Evidence & limits

Source review checked 2026-10-03. Full skill/agent runtime evaluation has not been performed.

0 current outcome records. No published pass/fail record matches this version and checksum.

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