What is Bundling?
Bundling is the process of combining multiple JavaScript, CSS, and other files into a single file to reduce the number of HTTP requests.
Why Bundling Matters
Each HTTP request adds overhead. Bundling reduces requests, speeds up loading, and improves performance.
Basic Example
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Bundling Tools
| Tool | Usage |
|---|---|
| Webpack | Popular bundler |
| Rollup | Efficient for libraries |
| Vite | Fast modern bundler |
| Parcel | Zero-config bundler |
Types of Bundling
- JavaScript bundling
- CSS bundling
- Asset bundling (images, fonts)
Benefits of Bundling
- Reduced HTTP requests
- Faster load times
- Better caching
- Simplified file management
Bundling vs Code Splitting
Bundling combines files into one, while code splitting breaks them into smaller chunks loaded on demand.
Best Practices
- Use bundling with code splitting
- Minify bundled files
- Enable caching for bundles
- Avoid very large bundles
Common Mistakes
- Creating overly large bundles
- Not using code splitting
- Ignoring caching strategies
- Bundling unused code
Conclusion
Bundling is a key technique in web performance optimization. When combined with code splitting and caching, it significantly improves load times and efficiency.