# Parcel vs Rollup

**Leader by vioscaleAI score:** Rollup

| Attribute | Parcel | Rollup |
|---|---|---|
| **vioscaleAI score** | 38.9 (58% (medium)) | 65.1 (76% (high)) |
| activity.commits_last_30d | 0 | 53 |
| adoption.dependent_repos | - | 1,133,301 |
| adoption.github_stars | 44,005 | 26,299 |
| content.faq | `[{"answer":"A build tool that automatically handles compilation, optimization, and asset processing for web projects with extensive built-in support for HTML, CSS, JavaScript, images, fonts, and other file types. Includes features like tree-shaking, code transformation for different browser targets, caching, and image optimization. It is indexed under Bundlers.","source":"https://parceljs.org","question":"What is Parcel?","confidence":0.6},{"answer":"Parcel is a paid product; published pricing starts at $100 per month. It is sold across 3 plans (Gold Sponsor, Silver Sponsor and Bronze Sponsor). Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://parceljs.org","question":"How much does Parcel cost?","confidence":0.6},{"answer":"Parcel supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://parceljs.org","question":"What platforms does Parcel support?","confidence":0.6},{"answer":"Yes. Parcel is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/parcel-bundler/parcel","question":"Is Parcel open source?","confidence":0.95},{"answer":"Parcel is available worldwide. Its primary market is the United States.","source":"https://parceljs.org","question":"Where is Parcel available?","confidence":0.5}]` | `[{"answer":"A module bundler that combines JavaScript files and compiles them using ES module format, supporting output to multiple formats (ES modules, CommonJS, UMD, SystemJS) and optimizing code size through tree-shaking to run efficiently in various environments including browsers and Node.js. It is indexed under Bundlers.","source":"https://rollupjs.org","question":"What is Rollup?","confidence":0.6},{"answer":"Rollup is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.","source":"https://rollupjs.org","question":"Is Rollup free to use?","confidence":0.6},{"answer":"Rollup supports the web and a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://rollupjs.org","question":"What platforms does Rollup support?","confidence":0.6}]` |
| description.long | A build tool that automatically handles compilation, optimization, and asset processing for web projects with extensive built-in support for HTML, CSS, JavaScript, images, fonts, and other file types. Includes features like tree-shaking, code transformation for different browser targets, caching, and image optimization. | Rollup is a module bundler that compiles JavaScript code written as ES modules into various output formats for compatibility with different environments. It performs static analysis to eliminate unused code and can target modern browsers with native ES module support or legacy environments requiring CommonJS or UMD output. |
| features.capabilities | - | `{"open_source":true,"tree_shaking":true}` |
| integrations.count | 1 | 2 |
| integrations.list | `[{"name":"GraphQL"}]` | `[{"name":"Vite"},{"name":"WMR"}]` |
| language.primary | JavaScript | JavaScript |
| license.spdx | MIT | - |
| market.availability | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true}` | `{"cli":true}` |
| pricing | `{"plans":[{"free":false,"name":"Gold Sponsor","summary":"$1,000/month","commitment":"monthly","components":[{"kind":"fixed","amount":1000,"period":"month","currency":"USD"}],"contactSales":false},{"free":false,"name":"Silver Sponsor","summary":"$500/month","commitment":"monthly","components":[{"kind":"fixed","amount":500,"period":"month","currency":"USD"}],"contactSales":false},{"free":false,"name":"Bronze Sponsor","summary":"$100/month","commitment":"monthly","components":[{"kind":"fixed","amount":100,"period":"month","currency":"USD"}],"contactSales":false}],"currency":"USD","sourceUrl":"https://parceljs.org","retrievedAt":"2026-08-18T22:03:00.360Z","startingPrice":{"amount":100,"period":"month","currency":"USD"},"billingPeriods":["month"]}` | `{"type":"open_source","sourceUrl":"https://rollupjs.org","retrievedAt":"2026-08-20T16:33:55.692Z"}` |
| pricing.model | commercial | open_source |
| pricing.price_level | high | free |
| pricing.starting_price | `{"amount":100,"currency":"USD"}` | - |
| pricing.transparent | yes | - |
| release.cadence_days | 26 | 4 |
| release.history | `[{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.16.4","date":"2026-02-02T03:22:20Z","type":"stable","version":"v2.16.4"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.16.2","date":"2025-12-06T22:58:25Z","type":"stable","version":"v2.16.2"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.16.1","date":"2025-11-05T01:24:42Z","type":"stable","version":"v2.16.1"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.16.0","date":"2025-09-18T19:44:20Z","type":"stable","version":"v2.16.0"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.15.3","date":"2025-06-20T22:53:28Z","type":"stable","version":"v2.15.3"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.15.2","date":"2025-05-24T23:49:37Z","type":"stable","version":"v2.15.2"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.15.1","date":"2025-05-16T03:49:59Z","type":"stable","version":"v2.15.1"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.15.0","date":"2025-05-12T01:51:29Z","type":"stable","version":"v2.15.0"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.14.4","date":"2025-03-29T20:59:47Z","type":"stable","version":"v2.14.4"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.14.3","date":"2025-03-29T03:56:59Z","type":"stable","version":"v2.14.3"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.14.2","date":"2025-03-23T21:33:06Z","type":"stable","version":"v2.14.2"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.14.1","date":"2025-03-19T06:10:30Z","type":"stable","version":"v2.14.1"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.14.0","date":"2025-03-18T04:31:15Z","type":"stable","version":"v2.14.0"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.13.3","date":"2024-12-16T18:32:49Z","type":"stable","version":"v2.13.3"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.13.2","date":"2024-11-25T18:03:50Z","type":"stable","version":"v2.13.2"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.13.1","date":"2024-11-25T01:51:21Z","type":"stable","version":"v2.13.1"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.13.0","date":"2024-11-12T16:53:40Z","type":"stable","version":"v2.13.0"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.12.0","date":"2024-02-28T15:17:43Z","type":"stable","version":"v2.12.0"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.11.0","date":"2024-01-02T20:44:19Z","type":"stable","version":"v2.11.0"},{"url":"https://github.com/parcel-bundler/parcel/releases/tag/v2.10.3","date":"2023-11-15T02:01:59Z","type":"stable","version":"v2.10.3"}]` | `[{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.6","date":"2026-10-13T09:04:50Z","type":"stable","version":"v4.64.6"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.5","date":"2026-10-10T13:05:03Z","type":"stable","version":"v4.64.5"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.4","date":"2026-10-10T06:08:53Z","type":"stable","version":"v4.64.4"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.3","date":"2026-10-08T18:11:54Z","type":"stable","version":"v4.64.3"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.2","date":"2026-10-07T17:41:17Z","type":"stable","version":"v4.64.2"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.1","date":"2026-10-07T05:43:11Z","type":"stable","version":"v4.64.1"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.64.0","date":"2026-10-02T15:41:02Z","type":"stable","version":"v4.64.0"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.6","date":"2026-10-01T06:53:07Z","type":"stable","version":"v4.63.6"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.5","date":"2026-09-24T10:09:48Z","type":"stable","version":"v4.63.5"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.4","date":"2026-09-19T06:38:02Z","type":"stable","version":"v4.63.4"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.3","date":"2026-09-14T12:47:02Z","type":"stable","version":"v4.63.3"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.2","date":"2026-09-12T06:39:14Z","type":"stable","version":"v4.63.2"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.1","date":"2026-08-28T06:01:35Z","type":"stable","version":"v4.63.1"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.63.0","date":"2026-08-25T13:05:57Z","type":"stable","version":"v4.63.0"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.62.5","date":"2026-08-20T17:03:22Z","type":"stable","version":"v4.62.5"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.62.4","date":"2026-08-01T05:22:37Z","type":"stable","version":"v4.62.4"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.62.3","date":"2026-07-26T15:00:28Z","type":"stable","version":"v4.62.3"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.62.2","date":"2026-06-19T14:57:25Z","type":"stable","version":"v4.62.2"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.62.1","date":"2026-06-19T12:43:26Z","type":"stable","version":"v4.62.1"},{"url":"https://github.com/rollup/rollup/releases/tag/v4.62.0","date":"2026-06-13T08:32:26Z","type":"stable","version":"v4.62.0"}]` |
| security.scorecard | 2.6 | 6.5 |
| security.vulnerabilities | - | `{"count":2,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=rollup&per_page=100","last_12m":1,"max_severity":"HIGH"}` |

## Capabilities (Bundlers)

| Capability | Parcel | Rollup |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Dev server hmr | - | - |
| Native esm dev | - | - |
| Code splitting | - | - |
| Tree shaking | - | ✓ |
| Css bundling | - | - |
| Zero config | - | - |
| Webpack plugin compat | - | - |
| Rollup plugin compat | - | - |
| Monorepo aware | - | - |
| Source maps | - | - |

*Source: vioscaleAI. Generated 2026-10-17T05:43:09.711Z. "-" = undocumented, not absent.*