Performance Budget & Optimization
Audit performance budget: calculate statistics from metrics, generate optimized CSS, and verify security overhead.
何时使用此配方
Performance budgets ensure your app stays fast. Analyze real metrics, optimize CSS delivery, and verify that security measures don't add excessive overhead.
步骤
Statistics Calculator
试用此工具 →Analyze load time metrics
Percentage Calculator
试用此工具 →Calculate failure rate
Tailwind Converter
试用此工具 →Optimize CSS delivery
SRI Hash Generator
试用此工具 →Verify bundle integrity
常见问题
What is a performance budget?
Quantitative limits on metrics: e.g., LCP < 2.5s, total JS < 200KB, total CSS < 50KB, third-party requests < 10. Budgets prevent gradual performance degradation.
What's a good p95 page load time?
Under 3 seconds for most web apps. Under 1.5 seconds for e-commerce (every 100ms costs 1% in conversions). Core Web Vitals: LCP < 2.5s, FID < 100ms, CLS < 0.1.
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