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Autoprefixer

PostCSS plugin that parses CSS and adds vendor prefixes to rules, using browser support data from Can I Use.

Autoprefixer is a PostCSS plugin that parses CSS and adds vendor prefixes to its rules, using browser support data from Can I Use. Authors write unprefixed CSS, and the plugin adds the prefixes that current browser popularity and property support call for.

The README’s usage sections cover Gulp, webpack through postcss-loader, the postcss-cli command line and other build tools, and the project says it belongs in an assets build step. A standalone build for the browser, or for a runtime other than Node.js, is shipped alongside the npm package.

Identity

Status
Active
Maintainer
Andrey Sitnik4
Maintained by
Individual4
First release
20137

Rendering and deploy

Runs as
Dev only3
Install with
npm install postcss postcss-cli autoprefixer3

Releases

Current major version
107
Last release
2026-10-267

Adoption

GitHub stars
22,1992
npm downloads a week
75,611,2379
Contributors
1878
Dependent repositories
3,254,90510
Dependent packages
90,84710

Why these figures do not compare

Sources

  1. 2026-10-28: links
    autoprefixer.github.io/
  2. 2026-10-28: links, Written in, GitHub stars
    api.github.com/repos/postcss/autoprefixer
  3. 2026-10-28: links, Categories, Runs as, Install with
    raw.githubusercontent.com/postcss/autoprefixer/main/README.md
  4. 2026-10-28: Maintainer, Maintained by, License model
    raw.githubusercontent.com/postcss/autoprefixer/main/LICENSE
  5. 2026-10-28: Runtime, Minimum runtime
    raw.githubusercontent.com/postcss/autoprefixer/10.6.2/package.json
  6. 2026-10-28: License
    registry.npmjs.org/autoprefixer/latest
  7. 2026-10-28: First release, Current major version, Last release
    api.github.com/repos/postcss/autoprefixer/releases
  8. 2026-10-28: Contributors
    api.github.com/repos/postcss/autoprefixer/contributors
  9. 2026-10-28: npm downloads a week
    api.npmjs.org/downloads/range/2026-09-28:2026-10-04/autoprefixer
  10. 2026-10-28: Dependent packages, Dependent repositories
    packages.ecosyste.ms/api/v1/registries/npmjs.org/packages/autoprefixer
  11. 2026-10-28: Built on
    github.com/postcss/autoprefixer/blob/main/README.md

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