Rolldown
Rust-based JavaScript bundler with Rollup-compatible plugin interface
- Vendor
- VoidZero Inc.
- Also known as
- rolldown
Available worldwide
What is Rolldown?
A fast bundler for JavaScript/TypeScript projects written in Rust that provides Rollup-compatible APIs and plugin interfaces, designed with scope and capabilities similar to esbuild.
Rolldown pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
Open Source
FreeFull bundler with transforms, minification, and plugin support
- Rust-based bundler
- Rollup-compatible API
- Esbuild feature parity
- Built-in transforms and minification
- Vite 8+ integration
Platform & deployment
Independently observed- CLI
- Cloud / SaaS
Integrations (5)
Independently observed- Rollup
- Vite
- esbuild
- napi-rs
- GitHub
Security & compliance
Known vulnerabilities: 0 (0 in the last 12 months) sourcea count reflects scale & disclosure, not quality
Rolldown FAQ
Common questions about Rolldown, answered from independent, dated evidence.
What is Rolldown?
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. It is indexed under Bundlers.
Source: https://rolldown.rs
Is Rolldown free to use?
Rolldown is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.
Source: https://rolldown.rs
What platforms does Rolldown support?
Rolldown supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.
Source: https://rolldown.rs
Can Rolldown be self-hosted?
We have only confirmed a cloud / SaaS deployment for Rolldown, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.
Source: https://rolldown.rs
What does Rolldown integrate with?
We have confirmed 5 integrations for Rolldown, including Rollup, Vite, esbuild, napi-rs and GitHub. This is what we could verify from public sources, so the vendor may support others we have not indexed.
Source: https://rolldown.rs
Is Rolldown open source?
Yes. Rolldown 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.
Rolldown alternatives
Other bundlers we track, ranked by the same independent score.
- ViteA modern, high-performance build system for web developmenthigh · 78%
- webpackJavaScript module bundler that packages code and assets for web browsershigh · 78%
- MetroA high-performance bundler optimized for React Native developmentmedium · 66%
- RollupA JavaScript bundler that optimizes ES modules for different runtime environments and removes unused code automaticallyhigh · 76%
- RspackA high-performance bundler that replaces webpack while maintaining API compatibilitymedium · 65%
- Turbopackmedium · 60%
Compare Rolldown
Side by side against other bundlers, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Rolldown, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Development activity | 63 | 0.12 | 7.6 | ✓ |
| Release cadence | 97 | 0.07 | 6.5 | ✓ |
| Stars | 78 | 0.03 | 2.6 | ✓ |
| Integrations | 22 | 0.05 | 1.2 | ✓ |
| Dependent projects | 8 | 0.08 | 0.6 | ✓ |
| Capabilities | 0 | 0.08 | 0.0 | - |
| Security posture | 0 | 0.09 | 0.0 | - |
| Package downloads | 0 | 0.17 | 0.0 | - |
| Security score | 0 | 0.05 | 0.0 | - |
| Developer Q&A activity | 0 | 0.08 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Activity
| Attribute | Value | Evidence |
|---|---|---|
| Commits last 30d | 100 | mediumsource · 2026-10-14 · 65% |
Adoption
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 6 items | mediumsource · 2026-09-10 · 66% |
Integrations
| Attribute | Value | Evidence |
|---|---|---|
| Count | 5 | mediumsource · 2026-08-20 · 60% |
Language
| Attribute | Value | Evidence |
|---|---|---|
| Primary | Rust | highsource · 2026-10-14 · 90% |
License
| Attribute | Value | Evidence |
|---|---|---|
| Spdx | MIT | highsource · 2026-10-14 · 95% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | highsource · 2026-08-20 · 75% |
Pricing
Release
Security
| Attribute | Value | Evidence |
|---|---|---|
| Vulnerabilities | Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=rolldown&per_page=100 · Last 12m: 0 | highsource · 2026-10-14 · 90% |
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