performance
Optimizes web performance for faster loading and improved user experience through detailed audits and specific code optimizations.
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The performance skill was audited on May 23, 2026 and we found 7 security issues across 1 threat category. Review the findings below before installing.
Categories Tested
Security Issues
low line 39
External URL reference
SourceSKILL.md
| 39 | * **Send Early Hints (HTTP 103) for slow origins.** When the origin needs hundreds of milliseconds to assemble the final response, return a `103 Early Hints` with `Link: </hero.webp>; rel=preload; as= |
low line 45
External URL reference
SourceSKILL.md
| 45 | <link rel="preconnect" href="https://fonts.googleapis.com"> |
low line 46
External URL reference
SourceSKILL.md
| 46 | <link rel="preconnect" href="https://cdn.example.com" crossorigin> |
low line 343
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SourceSKILL.md
| 343 | <script src="https://analytics.example.com/script.js"></script> |
low line 346
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SourceSKILL.md
| 346 | <script async src="https://analytics.example.com/script.js"></script> |
low line 354
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SourceSKILL.md
| 354 | script.src = 'https://widget.example.com/embed.js'; |
low line 389
External URL reference
SourceSKILL.md
| 389 | npx lighthouse https://example.com --output html --output-path report.html |
Scanned on May 23, 2026
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Categorydevelopment
UpdatedJune 10, 2026
github-copilotcopilotclaude-codecodexcursorwindsurfclineroo-codeampopencodeaideropenclawgemini-cliantigravityfrontendcross-platformfrontend-developerux-designerproduct-managerdevelopmentdesignproduct
vitalikpestov/Skills-Catalog