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Bundles JavaScript with tree shaking for clean, optimized output

Free, no paid tier
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Reviews on G2
648 reviews tracked

The Bottom Line

Price
Free, no paid tier. Compare plans

Key facts

  • Rollup is a module bundler for JavaScript that uses ES modules
  • It creates optimized bundles for libraries and applications
  • Completely free and open-source

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

What is Rollup?

Editorial review
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

how we evaluate Source rollupjs.org ↗

Ratings Across the Web

4.3 (648 reviews)

Rollup holds an aggregate rating of 4.3 out of 5 from 648 reviews across G2, last checked May 29, 2026.

G2 648 reviews
4.3/5

Ratings aggregated from independent review platforms. Learn more

Key Features

  • JS bundler
  • ES modules
  • Tree-shaking
  • Code splitting
  • Plugins
  • Open source

Pricing Plans

Pricing checked Oct 5, 2026

Rollup plans and prices, checked October 2026
PlanPriceDetails
Free

$0

  • 100% free and open source
  • MIT license
  • ES module bundler
+3 more
  • Tree-shaking
  • Plugin ecosystem
  • Community support
View full pricing

Is Rollup worth the price?

Great value

Rollup's pricing is exceptionally generous, being entirely free and open source under the MIT license.

This makes it an incredibly fair and accessible option, as there are no monetary costs associated with its use. It is best for individual developers, small teams, and open-source projects seeking a robust module bundler without budget constraints.

Full Rollup pricing: every plan, hidden costs and alternatives

Reviews

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4.3/5

Across 648 verified user reviews on G2

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Best Rollup Alternatives

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Extremely fast JavaScript bundler

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Still deciding?

Most buyers shortlist 2 or 3 tools before committing. Pull a side-by-side comparison or browse the full alternatives shortlist below.

Rollup vs Webpack Head-to-head: features, pricing, who wins Rollup vs SWC Head-to-head: features, pricing, who wins Rollup vs Vite Head-to-head: features, pricing, who wins

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Rollup FAQ

How does Rollup optimize JavaScript output?

Rollup optimizes JavaScript output by bundling code with tree shaking, which removes unused code. This process results in clean and optimized bundles, particularly beneficial for library authors.

Which teams benefit most from using Rollup?

Teams developing JavaScript libraries will find Rollup particularly beneficial due to its strong support for library use cases. Its ability to produce clean, tree-shaken bundles is ideal for this purpose.

How is Rollup priced?

Rollup is free to use, meaning there is no paid plan required to access its features. It is an open-source tool available for bundling JavaScript.

Can Rollup be extended with additional functionalities?

Yes, Rollup can be extended through its plugin ecosystem, which allows users to add various functionalities. This ecosystem contributes to its active development and adaptability.

What kind of trade-offs should users consider when choosing Rollup?

Users should consider that Rollup requires configuration and has a learning curve. It also offers fewer features compared to Webpack and may have longer build times in certain scenarios.

How does Rollup compare to Webpack for bundling JavaScript?

Rollup focuses on bundling JavaScript with tree shaking for clean, optimized output, especially for libraries, while Webpack generally offers a broader set of features. Rollup may have fewer features than Webpack, but it excels in producing optimized bundles for library authors.

Source: rollupjs.org

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