What problem does it solve?
This Skill helps frontend teams dramatically improve perceived performance by optimizing how browsers fetch resources, render pages, and communicate with servers across modern network protocols.
Core Features & Use Cases
- Network Fundamentals: understanding latency, RTTs, and how DNS, TCP, TLS affect page load; apply optimizations to reduce round trips.
- HTTP Protocol Evolution: choosing between HTTP/1.1, HTTP/2, and HTTP/3, and using features like 103 Early Hints.
- Resource Loading & Critical Rendering Path: minimize render-blocking resources, inline critical CSS, and optimize script loading and fonts.
- Caching Strategies: configure long-term caching, hashing, and service worker patterns to minimize re-fetches.
- Core Web Vitals Optimization: target LCP, INP, CLS with practical techniques and measurement.
- Real-Time Communication: select WebSocket/SSE/polling strategies for live data with efficient reconnections.
Quick Start
Identify the current performance bottlenecks on a web app and implement a starter optimization pass: enable preconnect to critical origins, inline above-the-fold CSS, and preload the LCP image.