Observed arrival · 2026-10-16
WebPerf Snippets puts performance checks within reach of an AI agent
A catalog of JavaScript snippets for measuring and debugging web performance, runnable through an AI agent or directly in browser developer tools.
○Open
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$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Web developers investigating performance problems
- Worth noticing
- Topics include LCP image entropy, SSR hydration data, resource hints, and long-animation-frame script attribution.
Field notes
The catalog groups checks across Core Web Vitals, loading, interactions, resources, and media, with individual entries for tasks such as finding render-blocking resources and analyzing webfont use above the fold. The page offers a browser-console route and saved DevTools snippets, and also lists a CLI and a DevTools extension marked beta. The supplied extract does not include the snippet bodies.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
◎NicheUnusually specific use
ƒJavaScriptBrowser-side code central
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