Individual skill
webpagetest
Use when reviewing templates, rendered HTML, or shared components related to Analyze performance with WebPageTest. Validate the final browser-facing markup, not just the source framework abstraction.
skills/webpagetest/SKILL.md
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- Observed behavior
- Network or broad shell
- Last checked
- Nov 9, 2026
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- Repository stars (not skill ratings)
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- Repository last updated
- Oct 31, 2026
- License
- MIT
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- frontend Repository topic
- front-end-development Repository topic
- front-end-developer-tool Repository topic
- guidelines Repository topic
- checklist Repository topic
- reference Repository topic
- web-development Repository topic
- html Repository topic
- css Repository topic
- javascript Repository topic
- engineering Derived category
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SKILL.mdcore · 1,723 bytesSKILL.mdcore · 1,723 bytesreferences/rule.mddoc · 30,099 bytes
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# Analyze performance with WebPageTest
WebPageTest reveals real-world performance issues that synthetic tools miss—like TTFB from actual locations, render-blocking patterns, and third-party script impact.
## Quick Reference
- Run 3+ tests to get consistent results
- Test from locations near your users
- Use filmstrip view to identify visual progress
- Check waterfall for blocking resources and slow third-parties
## Check
Use WebPageTest to analyze page performance, identify bottlenecks, and measure real-world loading metrics across different devices and connections.