Quick Comparison
| Rspack | Webpack | |
|---|---|---|
| Language | Rust | JavaScript |
| Speed | 5-10x faster | Baseline |
| Compatibility | Most Webpack plugins | 100% |
| Config | Same as Webpack | N/A |
| Migration | Drop-in (mostly) | N/A |
When to Use Rspack
- You have a Webpack project and want faster builds
- You can’t migrate to Vite (too many Webpack plugins)
- You want a drop-in speed improvement
When to Use Webpack
- You need 100% plugin compatibility
- Rspack doesn’t support a specific feature you need
When to Use Neither
If you’re starting fresh, use Vite instead. Rspack is mainly for migrating existing Webpack projects.
Verdict
Rspack is the best option for speeding up existing Webpack projects without a full rewrite. For new projects, use Vite.