Bundles JavaScript with tree shaking for clean, optimized output
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676 reviews trackedThe Bottom Line
Entry price
Free, no paid tier
Biggest pro
Good for libraries
Biggest con
Vite often preferred
TL;DR - Rollup
- Rollup is a module bundler for JavaScript that uses ES modules
- It creates optimized bundles for libraries and applications
- Completely free and open-source
Pricing: Free forever
Best for: Individuals & startups
4.4/5 across review platforms
What is Rollup?
Rollup bundles JavaScript with tree shaking. Module bundler for library authors-bundling that produces clean output.
The tree shaking works well. The library use case is strong. The output is optimized.
JavaScript library authors often use Rollup for clean, shaken bundles.
Available on: Web
Pros & Cons
Pros
- Good for libraries
- Tree shaking
- Plugin ecosystem
- ES modules focus
- Active development
Cons
- Vite often preferred
- Configuration needed
- Less features than Webpack
- Learning curve
- Build times
Ratings Across the Web
4.4(676 reviews)
Ratings aggregated from independent review platforms. Learn more
Key Features
JS bundlerES modulesTree-shakingCode splittingPluginsOpen source
Pricing Plans
Pricing checked May 28, 2026
Free
Free
- 100% free and open source
- MIT license
- ES module bundler
- Tree-shaking
- Plugin ecosystem
- Community support
Reviews
4.4/5
Across 676 verified user reviews on G2, Capterra
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Rollup FAQ
Is Rollup free?
Yes, Rollup is completely free and open source. It's one of the foundational tools in the JavaScript ecosystem, used by Vite and many libraries.
What is Rollup?
Rollup is a JavaScript module bundler that's particularly good at creating library bundles. It produces cleaner, smaller output than Webpack and is used by Vite under the hood.
Rollup vs Webpack?
Rollup produces cleaner bundles and is ideal for libraries. Webpack has more features for applications (code splitting, HMR). Rollup for libraries; Webpack for complex apps.
Source: rollupjs.org