Performance Optimization

Overview

Optimize performance with a measure-first approach. Never optimize without data. Establish baselines, identify bottlenecks, apply targeted fixes, and verify improvements.

When to Use

• Performance requirements are stated or implied
• You suspect a regression after recent changes
• Page load or interaction speed is noticeably slow
• Bundle size has grown beyond acceptable thresholds
• Database queries are slow under load

Core Web Vitals Targets