JSS
JavaScript authoring tool for CSS that describes styles in JavaScript and compiles them in the browser, on the server or at build time.
JSS is an authoring tool for CSS: styles are described in JavaScript and compiled into style sheets in the browser, on the server or at build time in Node. It is installed with yarn or loaded from the unpkg CDN, and its documentation is on the project’s own site. The source is in the cssinjs organization on GitHub, and Oleg Isonen is named in the copyright line of the license.
Worth knowing
The README states that the project is no longer maintained. Its maintainer says they are working on a new tool, Webstudio, which the README links.
Identity
Rendering and deploy
- Runs as
- In the browser, Dev only6
- Install with
- yarn5
Releases
Adoption
Sources
- 2026-10-27: Status, links
github.com/cssinjs/jss/blob/master/readme.md - 2026-10-27: links, Written in, Categories, License, GitHub stars
api.github.com/repos/cssinjs/jss - 2026-10-27: First release
api.github.com/repos/cssinjs/jss/git/refs/tags/0.2.1 - 2026-10-27: Maintainer, License model
raw.githubusercontent.com/cssinjs/jss/master/LICENSE - 2026-10-27: Install with
github.com/cssinjs/jss/blob/master/docs/setup.md - 2026-10-27: Runs as
github.com/cssinjs/jss/blob/master/docs/intro.md - 2026-10-27: Current major version, Last release
api.github.com/repos/cssinjs/jss/releases - 2026-10-27: Contributors
api.github.com/repos/cssinjs/jss/contributors - 2026-10-28: npm downloads a week
api.npmjs.org/downloads/range/2026-09-28:2026-10-04/jss - 2026-10-27: Dependent packages, Dependent repositories
packages.ecosyste.ms/api/v1/registries/npmjs.org/packages/jss - 2026-10-27: Sites using it (HTTP Archive)
cdn.httparchive.org/v1/technologies