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Build responsive, mobile-first projects on the web with the first front-end component library in Metro Style and not only.
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Metro 4 Components Library

Sleek, intuitive, and powerful front-end framework for faster and easier web development. Build responsive, mobile-first projects on the web with the first front-end component library in Metro Style.
Explore Metro 4 docs »

Metro 4 is an MIT-licensed open source project. It's an independent project with its ongoing development made possible entirely thanks to the support by these
awesome Backers.

Current Version 4.2.48


Build Status dependencies Status devDependencies Status CSS gzip size JS gzip size Icons gzip size GitHub release npm version Nuget Website


License: MIT GitHub issues GitHub code size in bytes


Donations on Patreon Donations on Open Collective


Join the chat at Join the chat at Join the forum at


Documentation and Demo:


Metro 4 releases frequently. I Am create release when there are significant bug fixes, new APIs or components. The usual frequency of release of the new version is one week on Sundays.


Long term support of older versions of Metro 4 does not currently exist. If your current version of Metro 4 works for you, you can stay on it for as long as you'd like. If you want to make use of new features as they come in you should upgrade to a newer version.


Browser Compatibility

Chrome Firefox Edge IE Safari Opera
Latest ✔ Latest ✔ Latest ✔ 11+ ✔ 9.1+ ✔ Latest ✔

Cross-browser Testing

Cross-browser Testing Platform and Open Source Provided by Sauce Labs. Sauce Labs ensures your favorite mobile apps and websites work flawlessly on every browser, operating system, and device.

Cross-browser Testing Platform Provided by BrowserStack. Seamless experience by testing on 2000+ real devices and browsers.


Metro 4 has MIT License

Old version

Metro UI CSS 3.x you can find in a repo Metro-UI-CSS-3
Metro UI CSS 2.x you can find in a repo Metro-UI-CSS-2
Metro UI CSS 0.x you can find in a repo Metro-UI-CSS-095

Documentation and Demo for V3:
Documentation and Demo for V2:
Documentation and Demo for V0:


Thanks to all. Special thanks to all those who financially supported the project.


Thanks to all who a testing a project.

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