Visually configure PostCSS plugins including Autoprefixer, Tailwind, CSSNano — generate postcss.config in one click
The PostCSS Config Generator is a free online tool that helps developers quickly create PostCSS configuration files. Instead of manually writing complex postcss.config.js files, you can visually select and configure plugins, then generate production-ready configuration code instantly. All processing happens locally in your browser — no data is uploaded to any server.
1. Select your output format (JavaScript, CommonJS, ESM, JSON, or package.json).
2. Choose a syntax parser if needed (default works for most cases).
3. Enable the PostCSS plugins you need and configure their options.
4. Add any custom plugins not listed in the built-in selection.
5. Click "Generate Config" to create your PostCSS configuration, then copy the code and install command.
Quickly set up PostCSS for new projects without manually researching plugin configurations. Save time on boilerplate setup.
Configure PostCSS for cross-browser compatibility with Autoprefixer, optimize CSS with CSSNano, and enable modern CSS features with postcss-preset-env.
Use postcss-pxtorem for responsive mobile layouts, converting pixel values to rem units automatically.
PostCSS was created by Andrey Sitnik in 2013 as a CSS post-processor. Unlike preprocessors like Sass or Less, PostCSS works on standard CSS and transforms it through plugins. This modular approach means you only include the transformations you need, keeping your build lean. The PostCSS ecosystem has over 400 plugins, making it one of the most extensible CSS tools available. It's used by major frameworks like Tailwind CSS and is the default CSS processing tool in Create React App and Next.js.
PostCSS is a tool for transforming CSS with JavaScript plugins. It doesn't do anything by itself, but its plugin ecosystem enables features like auto-adding vendor prefixes, minifying CSS, and using future CSS syntax.
Sass is a CSS preprocessor providing variables, nesting, and mixins as syntax extensions. PostCSS is a post-processor that transforms standard CSS through plugins. PostCSS is more modular — you pick only the plugins you need. They can be used together.
The most popular PostCSS plugins include: autoprefixer (auto vendor prefixes), cssnano (CSS minification), postcss-preset-env (future CSS syntax), tailwindcss (utility-first CSS framework), and postcss-import (process @import rules).
Autoprefixer is the most popular PostCSS plugin. It automatically adds vendor prefixes to CSS properties based on Can I Use data. You write standard CSS and Autoprefixer handles browser compatibility automatically.
Absolutely safe! All configuration generation happens locally in your browser. No data is sent to any server, and no personal information is collected.