Individual skill
web-perf
Measure, diagnose, or review web page performance when page speed, Core Web Vitals, Lighthouse performance, loading behavior, or a named performance regression is the primary task. Use current browser evidence and first-party documentation. Do not turn a focused metric investigation into a full performance, accessibility, bundler, and codebase audit.
web-perf/SKILL.md
Source commit 1acf58f08cca24b764a4352a6c30fed1f7fb9fb6
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- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- No
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- Skill scan complete
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- Observed behavior
- Not checked yet
- Last checked
- Nov 7, 2026
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- Repository stars (not skill ratings)
- 198
- Repository last updated
- Nov 9, 2026
- License
- MIT
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# Web Performance
Use current browser evidence for the page and state the user named. Metrics,
thresholds, and tooling change; retrieve current web.dev or Chrome documentation
before citing specific thresholds or API details.
## Set the acceptance scope
Choose the smallest mode that answers the request:
- **Named regression or metric:** measure that path and analyze its likely
contributors.
- **General performance audit:** capture representative load evidence, rank the
material issues, and stop when the highest-impact causes are explained.