Performance First: 12 Tactics to Speed Up Your Web App
Quick Wins
- Measure (LCP, INP, TTFB) before optimizing.
- HTTP caching & CDN with immutable asset hashes.
- Image optimization (responsive, modern formats).
- Code splitting & lazy loading.
- DB indices & query plans.
- Reduce chattiness with batching and pagination.
- Server compression & HTTP/2 or HTTP/3.
- Preload critical resources.
- Optimize third‑party scripts.
- Profiling in prod with tracing.
- Background jobs for slow tasks.
- Budgeting: set performance SLAs in CI.
