# Parcel vs Rolldown

| Attribute | Parcel | Rolldown |
|---|---|---|
| **Vioscale score** | 36.6 (26% (low)) | 49.3 (23% (low)) |
| activity.commits_last_30d | 0 | 100 |
| adoption.dependent_repos | - | 2 |
| adoption.github_stars | 44,019 | 13,911 |
| deployment.options | - | `{"cloud":true}` |
| 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. | A JavaScript/TypeScript bundler combining Rollup-compatible APIs with esbuild feature parity, designed as the standard bundler for Vite. Free and open-source software built and maintained by a core team with community contributions. |
| integrations.count | 1 | 5 |
| integrations.list | `[{"name":"GraphQL"}]` | `[{"name":"Rollup"},{"name":"Vite"},{"name":"esbuild"},{"name":"napi-rs"},{"name":"GitHub"}]` |
| language.primary | JavaScript | Rust |
| license.spdx | MIT | MIT |
| market.availability | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"primaryMarkets":[],"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","plans":[{"free":true,"name":"Open Source","features":["Rust-based bundler","Rollup-compatible API","Esbuild feature parity","Built-in transforms and minification","Vite 8+ integration"],"description":"Full bundler with transforms, minification, and plugin support"}],"freeTier":true,"sourceUrl":"https://rolldown.rs","retrievedAt":"2026-08-20T16:36:15.492Z"}` |
| pricing.free_tier | - | yes |
| pricing.model | commercial | open_source |
| pricing.price_level | high | free |
| pricing.starting_price | `{"amount":100,"currency":"USD"}` | - |
| pricing.transparent | yes | yes |
| release.cadence_days | 26 | 6 |
| 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/rolldown/rolldown/releases/tag/v1.2.6","date":"2026-08-26T12:05:05Z","type":"stable","version":"v1.2.6"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.5","date":"2026-08-19T13:30:59Z","type":"stable","version":"v1.2.5"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.4","date":"2026-08-12T10:33:48Z","type":"stable","version":"v1.2.4"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.3","date":"2026-08-05T10:52:38Z","type":"stable","version":"v1.2.3"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.2","date":"2026-08-03T09:50:37Z","type":"stable","version":"v1.2.2"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.1","date":"2026-07-29T13:25:27Z","type":"stable","version":"v1.2.1"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.2.0","date":"2026-07-15T11:08:44Z","type":"stable","version":"v1.2.0"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.1.5","date":"2026-07-08T11:32:27Z","type":"stable","version":"v1.1.5"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.1.4","date":"2026-07-01T14:02:02Z","type":"stable","version":"v1.1.4"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.1.3","date":"2026-06-24T10:49:00Z","type":"stable","version":"v1.1.3"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.1.2","date":"2026-06-18T13:33:10Z","type":"stable","version":"v1.1.2"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.1.1","date":"2026-06-11T09:09:53Z","type":"stable","version":"v1.1.1"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.1.0","date":"2026-06-03T14:06:51Z","type":"stable","version":"v1.1.0"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.0.3","date":"2026-05-27T11:50:23Z","type":"stable","version":"v1.0.3"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.0.2","date":"2026-05-20T08:49:43Z","type":"stable","version":"v1.0.2"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.0.1","date":"2026-05-13T12:45:04Z","type":"stable","version":"v1.0.1"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.0.0","date":"2026-05-07T09:10:49Z","type":"stable","version":"v1.0.0"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.0.0-rc.18","date":"2026-04-29T13:44:23Z","type":"stable","version":"v1.0.0-rc.18"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.0.0-rc.17","date":"2026-04-22T11:14:45Z","type":"stable","version":"v1.0.0-rc.17"},{"url":"https://github.com/rolldown/rolldown/releases/tag/v1.0.0-rc.16","date":"2026-04-16T09:05:43Z","type":"stable","version":"v1.0.0-rc.16"}]` |
| security.scorecard | 2.6 | - |
| security.vulnerabilities | - | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=rolldown&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Bundlers)

| Capability | Parcel | Rolldown |
|---|:--:|:--:|
| **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: Vioscale. Generated 2026-09-01T14:54:53.606Z. "-" = undocumented, not absent.*