Bundle Size Optimization
Code splitting, tree shaking, dynamic imports, bundle analysis, and dependency optimization for smaller JavaScript bundles.
- Difficulty
- intermediate
- Read time
- 1 min read
- Version
- v1.0.0
- Confidence
- established
- Last updated
Quick Reference
Analyze bundle with @next/bundle-analyzer. Import specific functions (lodash/debounce not lodash). Use dynamic() for heavy components. Route-based splitting is automatic in Next.js. Avoid barrel exports. Use lighter alternatives (date-fns over moment). Target < 200KB initial JS.
Use When
- Reducing JavaScript bundle size
- Improving initial page load
- Analyzing bundle composition
- Optimizing dependencies
Skip When
- Server-only code
- Build-time scripts
Bundle Size Optimization
Code splitting, tree shaking, dynamic imports, bundle analysis, and dependency optimization for smaller JavaScript bundles.