JSR
JSR: A free registry for modern ESM packages across JavaScript and TypeScript runtimes. Ranked #19 of 28 in Package Registries by our editors (7.2/10); pricing: Free plan; best for modern JavaScript and TypeScript packages.
At a glance
- Editor score7.2 / 10
- PricingFree plan
- Best forModern JavaScript and TypeScript packages
- Free planYes
- Paid fromFree
- Package ecosystemsSingle
- Facts checked20 Sep 2026
Where it wins
- Native TypeScript and ESM package publishing
- Cross-runtime consumption across Deno, Node.js, Bun and more
- Automatic API documentation and OIDC publishing workflows
Where it doesn't
- No private registry functionality
- Focused on a single package ecosystem
- 20 MB limit for uploaded packages and individual files
Our verdict on JSR
JSR is an open-source package registry for JavaScript and TypeScript packages. It is designed for developers publishing ESM modules and distributing them across Deno, Node.js, Bun, browsers and Cloudflare Workers. Native TypeScript support, npm-compatible installation and registry APIs make it suitable for teams maintaining modern JavaScript packages that need to reach more than one runtime without changing package format.
Its strongest distinction is the combination of native TypeScript support, cross-runtime consumption and generated API documentation from package source code. Packages can be consumed through native JSR imports or npm-compatible package managers, including npm, pnpm and Yarn. Scoped packages provide member and admin roles, while immutable published versions support fixed package releases. GitHub Actions publishing with OIDC authentication adds a documented workflow for automated releases, and registry, npm compatibility and management APIs support integration with surrounding tooling.
JSR is free to use, including its free plan, according to the vendor’s published pricing information. The registry does not provide private registry functionality, so teams distributing proprietary packages should choose a registry with private-package support instead. Its documented 20 MB limit applies to uploaded packages and individual files. JSR is therefore a strong fit for public JavaScript and TypeScript packages, especially those targeting multiple runtimes and benefiting from generated documentation. It is less suitable for organizations that need private distribution or a package registry spanning multiple package ecosystems.
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JSR pricing
JSR fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| Package ecosystems | Single |
| Private packages | No |
| Package size limit | 20 MB |
| Storage limit | Not verified |
| Download limit | Not verified |
| Access controls | Not verified |
| Deployment | Cloud |
| Platforms | Web |
| Support | Email, Community, Docs |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 8 integrations: Deno, Node.js, Bun, Cloudflare Workers, npm, pnpm … |
| Pricing | Free plan |
| Website | jsr.io |
| Facts checked | 20 Sep 2026 |
JSR integrations
JSR lists 8 integrations on its own site.
- Deno
- Node.js
- Bun
- Cloudflare Workers
- npm
- pnpm
- Yarn
- GitHub Actions
Alternatives to JSR
- NuGetA free, comprehensive package manager for public and private .NET feeds.9.4
- Maven CentralA strong public registry for Java and JVM artifacts, with structured publishing controls.9.3
- PackagistA free public registry for discovering and distributing PHP packages through Composer.8.8
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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