@mui/material
Material UI is an open-source React component library that implements Google's Material Design. It's comprehensive and can be used in production out of the box.
About
Material UI is an open-source React component library that implements Google's Material Design. It's comprehensive and can be used in production out of the box.
What detecting @mui/material tells you about a site
@mui/material (Material UI) tells you the site is built on Google's Material Design via the most popular React component library. Its presence implies a large, themed component system and usually Emotion-based styling under the hood — a fast route to a consistent, accessible UI at the cost of a heavier bundle.
Why the exact @mui/material version matters
MUI v5 moved to Emotion and the `sx` prop; v6/v7 advanced the styling engine and React 18/19 support. The exact bundled version tells you which styling API and theming model the app uses, and whether it's carrying the older JSS-based v4.
@mui/material in a real-world stack
When you find @mui/material in a bundle, it rarely travels alone. @emotion/react and @emotion/styled (the default style engine), plus @mui/icons-material.
Quick facts
npm install @mui/materialThis package powers Material UI
The @mui/material package is the canonical implementation of Material UI. Sourcemap Explorer uses this exact npm package as the framework-level fingerprint when it flags Material UI on a page — both via the bundled node_modules/@mui/material/ source paths and via the embedded package.json inside the JavaScript sourcemap.
Common pairings
Packages this one expects to find in the same project. Each is also a Sourcemap Explorer detection target.
What @mui/material pulls in
@mui/material declares 12 direct dependencies — each one also rides into any bundle that ships @mui/material, so they are detection targets too. Reading them is a quick way to understand the package's real footprint .
How Sourcemap Explorer detects @mui/material
@mui/material ships as v9.3.1, published 2026-08-06 and carries 12 direct dependencies, 6 peer dependencies (react, react-dom, @types/react), 261 versions on the registry. Those exact numbers are the footprint Sourcemap Explorer matches when @mui/material rides inside a deployed bundle — here is how the detection works.
We catch @mui/material from two complementary signals: bundled source paths and the embedded package.json. Modern bundlers (webpack, Vite, esbuild, Rollup, Turbopack) preserve the original node_modules/@mui/material/ paths inside the JavaScript sourcemap's sources[] array — that's the canonical signal. When the matching package.json is also captured in sourcesContent[], we read the exact version field — patch number included. No regex guessing, no version inference.
- 1
Confirm the site exposes sourcemaps
In DevTools Network, check the response headers of any application script for `SourceMap` or `X-SourceMap`. Failing that, fetch the script's last 4 KB and look for a `//# sourceMappingURL=` comment — that map is where the `@mui/material` paths live.
- 2
Find the package in the bundle
Open DevTools → Network → reload. Click any application script and look at its sourcemap. Inside, search `sources[]` for entries matching `node_modules/@mui/material/` — every match confirms the package is bundled. The matching `sourcesContent[i]` for `node_modules/@mui/material/package.json` gives you the exact installed version.
- 3
Read the version directly from package.json
Run `jq -r '. as $m | $m.sources | to_entries[] | select(.value | endswith("node_modules/@mui/material/package.json")) | $m.sourcesContent[.key] | fromjson | .version' bundle.js.map`. Sourcemap Explorer automates the same query in the popup.
Major releases of @mui/material
When each major version first landed. Major bumps are where breaking changes live, so this timeline is the fastest way to date the @mui/material version a site actually ships against the ecosystem.
Recent versions
@mui/material README
Live mirror of the GitHub README, for reference. Updated whenever the repo's default branch changes.
Material UI
Material UI is a comprehensive library of React components that features our independent implementation of Google's Material Design system. It's trusted by some of the world's greatest product teams because it's been rigorously battle-tested through more than a decade of development by thousands of open-source contributors.
Material UI's core functionality is extended by MUI X, a suite of complex components for advanced use cases.
Documentation
Get started in the Material UI documentation.
Older versions
Note: @next points to pre-releases.
Use @latest for the latest stable release.
Sponsors
Diamond 💎
Diamond sponsors are those who have pledged $1,500/month or more to MUI.
Gold 🏆
via Open Collective or via Patreon
Goread.io Buzzoid Twicsy Poprey SocialWick Follower24 Views4You
Gold sponsors are those who have pledged $500/month or more to MUI.
More backers
See the full list of our backers.
Questions
For how-to questions that don't involve making changes to the code base, please use Stack Overflow instead of GitHub issues.
Examples
Our documentation features a collection of example projects.
Premium templates
You can find complete templates and themes in the MUI Store.
Contributing
Read the contributing guide to learn about our development process, how to propose bug fixes and improvements, and how to build and test your changes.
Contributing is about more than just issues and pull requests! There are many other ways to support Material UI beyond contributing to the code base.
Changelog
The changelog is regularly updated to reflect what's changed in each new release.
Roadmap
Future plans and high-priority features and enhancements can be found in the roadmap.
License
This project is licensed under the terms of the MIT license.
Security
For details on supported versions and contact information for reporting security issues, please refer to the security policy.
Sponsoring services
These great services sponsor MUI's core infrastructure:
GitHub lets us host the Git repository and coordinate contributions.
Netlify lets us distribute the documentation.
CodeCov lets us monitor test coverage.
FAQ
What is @mui/material used for?
Material UI is an open-source React component library that implements Google's Material Design. It's comprehensive and can be used in production out of the box.
How can I tell if a website is using @mui/material?
Open the page in Chrome with the Sourcemap Explorer extension installed and read the Stack tab. We catch `@mui/material` from two complementary signals: `node_modules/@mui/material/` paths inside the JavaScript sourcemap, and the embedded `package.json` we read for exact-version detection. Without the extension you can do the same lookup manually in DevTools — the steps are listed in the "How Sourcemap Explorer detects" section above.
How do I find out which version of @mui/material a website is running?
Read it straight from the site's JavaScript sourcemap. When a build ships source maps, the bundled `@mui/material/package.json` carries the exact `version` string — Sourcemap Explorer extracts it in one click on the Stack tab, and you can do it by hand in DevTools by opening the `.map` file and searching for `node_modules/@mui/material/package.json`. That is far more reliable than inferring the version from an asset-hash or a `?ver=` query string, which is all surface-level detectors have to go on. The current npm release is 9.3.1, but real deployments frequently run an older pinned version — which is exactly why reading the bundled number matters.
What is the latest version of @mui/material?
9.3.1, as published on the npm registry. The "Recent versions" table on this page lists the most recent 8 releases with their release dates. Sourcemap Explorer reports the version actually bundled into a site, which can lag the latest release by months on real-world deployments.
Is @mui/material actively maintained?
Very actively maintained — the last release shipped within the past three months. The last published release was 2026-08-06. Source code: https://github.com/mui/material-ui.
What is the relationship between @mui/material and Material UI?
@mui/material is the canonical npm package for Material UI. Sourcemap Explorer treats finding `@mui/material` in a bundle as the framework-level signal that Material UI is on the page, and the page you're reading is the canonical Sourcemap Explorer entry for the package itself.
Where can I read more?
Project homepage: https://mui.com/material-ui/. Source code: https://github.com/mui/material-ui. Published on npm: https://www.npmjs.com/package/@mui/material. Licensed as MIT.
Keep reading on Sourcemap Explorer
Detection deep dives
Alternative tools
Detected by Sourcemap Explorer
When a bundle ships sourcemaps, we read the embedded package.json for @mui/material and report the precise version (the registry's latest is v9.3.1, published 2026-08-06; the bundled copy is often older). Without sourcemaps, an import / require in the page's scripts is enough to flag it.