JSR

Spec sheet

Automatic documentation

JSR automatically generates package documentation from source code and JSDoc comments.Read 7 Oct 2026 · jsr.io

ES modules

JSR packages are distributed as web-standard ECMAScript modules.Read 7 Oct 2026 · jsr.io

GitHub Actions publishing

JSR supports publishing from GitHub Actions using OIDC without configuring secrets or authentication.Read 7 Oct 2026 · jsr.io

Immutable versions

Published package versions are immutable and generally cannot be changed or deleted.Read 7 Oct 2026 · jsr.io

Open source

JSR is open source and licensed under the MIT License.Read 7 Oct 2026 · jsr.io

Operator and funding

JSR is currently operated by the Deno company, which pays its hosting bills; JSR says it is designed to always be free to use.Read 7 Oct 2026 · jsr.io

Other CI publishing

Publishing from other CI providers is supported with a personal access token, and token-based publishing does not generate provenance attestations.Read 7 Oct 2026 · jsr.io

Package managers

JSR packages can be added with Deno, pnpm, Yarn, npm, or Bun tooling.Read 7 Oct 2026 · jsr.io

Package scoring

JSR provides package scoring and supports filtering package search by score.Read 7 Oct 2026 · jsr.io

Provenance

For packages published from GitHub Actions, JSR can create SLSA provenance statements stored in the Sigstore Rekor transparency log.Read 7 Oct 2026 · jsr.io

Runtime compatibility

JSR says packages work with Node.js, Deno, Bun, browsers, and more.Read 7 Oct 2026 · jsr.io

TypeScript support

JSR accepts TypeScript source and generates package documentation and declaration files, and transpiles code for cross-runtime compatibility.Read 7 Oct 2026 · jsr.io

Usage limits

JSR applies quotas to scopes and package versions to prevent abuse and says users can request quota increases by email.Read 7 Oct 2026 · jsr.io

What it is

JSR is a modern package registry for JavaScript and TypeScript.Read 7 Oct 2026 · jsr.io

Plans and prices

Every JSR plan and price →

Where Specifiction places it

• Package Registries#17 of 287.7