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| [](http://expressjs.com/) | |
| **Fast, unopinionated, minimalist web framework for [Node.js](http://nodejs.org).** | |
| **This project has a [Code of Conduct][].** | |
| ## Table of contents | |
| * [Installation](#Installation) | |
| * [Features](#Features) | |
| * [Docs & Community](#docs--community) | |
| * [Quick Start](#Quick-Start) | |
| * [Running Tests](#Running-Tests) | |
| * [Philosophy](#Philosophy) | |
| * [Examples](#Examples) | |
| * [Contributing to Express](#Contributing) | |
| * [TC (Technical Committee)](#tc-technical-committee) | |
| * [Triagers](#triagers) | |
| * [License](#license) | |
| [![NPM Version][npm-version-image]][npm-url] | |
| [![NPM Install Size][npm-install-size-image]][npm-install-size-url] | |
| [![NPM Downloads][npm-downloads-image]][npm-downloads-url] | |
| [![OpenSSF Scorecard Badge][ossf-scorecard-badge]][ossf-scorecard-visualizer] | |
| ```js | |
| const express = require('express') | |
| const app = express() | |
| app.get('/', function (req, res) { | |
| res.send('Hello World') | |
| }) | |
| app.listen(3000) | |
| ``` | |
| ## Installation | |
| This is a [Node.js](https://nodejs.org/en/) module available through the | |
| [npm registry](https://www.npmjs.com/). | |
| Before installing, [download and install Node.js](https://nodejs.org/en/download/). | |
| Node.js 0.10 or higher is required. | |
| If this is a brand new project, make sure to create a `package.json` first with | |
| the [`npm init` command](https://docs.npmjs.com/creating-a-package-json-file). | |
| Installation is done using the | |
| [`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally): | |
| ```console | |
| $ npm install express | |
| ``` | |
| Follow [our installing guide](http://expressjs.com/en/starter/installing.html) | |
| for more information. | |
| ## Features | |
| * Robust routing | |
| * Focus on high performance | |
| * Super-high test coverage | |
| * HTTP helpers (redirection, caching, etc) | |
| * View system supporting 14+ template engines | |
| * Content negotiation | |
| * Executable for generating applications quickly | |
| ## Docs & Community | |
| * [Website and Documentation](http://expressjs.com/) - [[website repo](https://github.com/expressjs/expressjs.com)] | |
| * [#express](https://web.libera.chat/#express) on [Libera Chat](https://libera.chat) IRC | |
| * [GitHub Organization](https://github.com/expressjs) for Official Middleware & Modules | |
| * Visit the [Wiki](https://github.com/expressjs/express/wiki) | |
| * [Google Group](https://groups.google.com/group/express-js) for discussion | |
| * [Gitter](https://gitter.im/expressjs/express) for support and discussion | |
| **PROTIP** Be sure to read [Migrating from 3.x to 4.x](https://github.com/expressjs/express/wiki/Migrating-from-3.x-to-4.x) as well as [New features in 4.x](https://github.com/expressjs/express/wiki/New-features-in-4.x). | |
| ## Quick Start | |
| The quickest way to get started with express is to utilize the executable [`express(1)`](https://github.com/expressjs/generator) to generate an application as shown below: | |
| Install the executable. The executable's major version will match Express's: | |
| ```console | |
| $ npm install -g express-generator@4 | |
| ``` | |
| Create the app: | |
| ```console | |
| $ express /tmp/foo && cd /tmp/foo | |
| ``` | |
| Install dependencies: | |
| ```console | |
| $ npm install | |
| ``` | |
| Start the server: | |
| ```console | |
| $ npm start | |
| ``` | |
| View the website at: http://localhost:3000 | |
| ## Philosophy | |
| The Express philosophy is to provide small, robust tooling for HTTP servers, making | |
| it a great solution for single page applications, websites, hybrids, or public | |
| HTTP APIs. | |
| Express does not force you to use any specific ORM or template engine. With support for over | |
| 14 template engines via [Consolidate.js](https://github.com/tj/consolidate.js), | |
| you can quickly craft your perfect framework. | |
| ## Examples | |
| To view the examples, clone the Express repo and install the dependencies: | |
| ```console | |
| $ git clone https://github.com/expressjs/express.git --depth 1 | |
| $ cd express | |
| $ npm install | |
| ``` | |
| Then run whichever example you want: | |
| ```console | |
| $ node examples/content-negotiation | |
| ``` | |
| ## Contributing | |
| [![Linux Build][github-actions-ci-image]][github-actions-ci-url] | |
| [![Windows Build][appveyor-image]][appveyor-url] | |
| [![Test Coverage][coveralls-image]][coveralls-url] | |
| The Express.js project welcomes all constructive contributions. Contributions take many forms, | |
| from code for bug fixes and enhancements, to additions and fixes to documentation, additional | |
| tests, triaging incoming pull requests and issues, and more! | |
| See the [Contributing Guide](Contributing.md) for more technical details on contributing. | |
| ### Security Issues | |
| If you discover a security vulnerability in Express, please see [Security Policies and Procedures](Security.md). | |
| ### Running Tests | |
| To run the test suite, first install the dependencies, then run `npm test`: | |
| ```console | |
| $ npm install | |
| $ npm test | |
| ``` | |
| ## People | |
| The original author of Express is [TJ Holowaychuk](https://github.com/tj) | |
| [List of all contributors](https://github.com/expressjs/express/graphs/contributors) | |
| ### TC (Technical Committee) | |
| * [UlisesGascon](https://github.com/UlisesGascon) - **Ulises Gasc贸n** (he/him) | |
| * [jonchurch](https://github.com/jonchurch) - **Jon Church** | |
| * [wesleytodd](https://github.com/wesleytodd) - **Wes Todd** | |
| * [LinusU](https://github.com/LinusU) - **Linus Unneb盲ck** | |
| * [blakeembrey](https://github.com/blakeembrey) - **Blake Embrey** | |
| * [sheplu](https://github.com/sheplu) - **Jean Burellier** | |
| * [crandmck](https://github.com/crandmck) - **Rand McKinney** | |
| * [ctcpip](https://github.com/ctcpip) - **Chris de Almeida** | |
| <details> | |
| <summary>TC emeriti members</summary> | |
| #### TC emeriti members | |
| * [dougwilson](https://github.com/dougwilson) - **Douglas Wilson** | |
| * [hacksparrow](https://github.com/hacksparrow) - **Hage Yaapa** | |
| * [jonathanong](https://github.com/jonathanong) - **jongleberry** | |
| * [niftylettuce](https://github.com/niftylettuce) - **niftylettuce** | |
| * [troygoode](https://github.com/troygoode) - **Troy Goode** | |
| </details> | |
| ### Triagers | |
| * [aravindvnair99](https://github.com/aravindvnair99) - **Aravind Nair** | |
| * [carpasse](https://github.com/carpasse) - **Carlos Serrano** | |
| * [CBID2](https://github.com/CBID2) - **Christine Belzie** | |
| * [enyoghasim](https://github.com/enyoghasim) - **David Enyoghasim** | |
| * [UlisesGascon](https://github.com/UlisesGascon) - **Ulises Gasc贸n** (he/him) | |
| * [mertcanaltin](https://github.com/mertcanaltin) - **Mert Can Altin** | |
| * [0ss](https://github.com/0ss) - **Salah** | |
| * [import-brain](https://github.com/import-brain) - **Eric Cheng** (he/him) | |
| * [3imed-jaberi](https://github.com/3imed-jaberi) - **Imed Jaberi** | |
| * [dakshkhetan](https://github.com/dakshkhetan) - **Daksh Khetan** (he/him) | |
| * [lucasraziel](https://github.com/lucasraziel) - **Lucas Soares Do Rego** | |
| * [IamLizu](https://github.com/IamLizu) - **S M Mahmudul Hasan** (he/him) | |
| * [Sushmeet](https://github.com/Sushmeet) - **Sushmeet Sunger** | |
| <details> | |
| <summary>Triagers emeriti members</summary> | |
| #### Emeritus Triagers | |
| * [AuggieH](https://github.com/AuggieH) - **Auggie Hudak** | |
| * [G-Rath](https://github.com/G-Rath) - **Gareth Jones** | |
| * [MohammadXroid](https://github.com/MohammadXroid) - **Mohammad Ayashi** | |
| * [NawafSwe](https://github.com/NawafSwe) - **Nawaf Alsharqi** | |
| * [NotMoni](https://github.com/NotMoni) - **Moni** | |
| * [VigneshMurugan](https://github.com/VigneshMurugan) - **Vignesh Murugan** | |
| * [davidmashe](https://github.com/davidmashe) - **David Ashe** | |
| * [digitaIfabric](https://github.com/digitaIfabric) - **David** | |
| * [e-l-i-s-e](https://github.com/e-l-i-s-e) - **Elise Bonner** | |
| * [fed135](https://github.com/fed135) - **Frederic Charette** | |
| * [firmanJS](https://github.com/firmanJS) - **Firman Abdul Hakim** | |
| * [getspooky](https://github.com/getspooky) - **Yasser Ameur** | |
| * [ghinks](https://github.com/ghinks) - **Glenn** | |
| * [ghousemohamed](https://github.com/ghousemohamed) - **Ghouse Mohamed** | |
| * [gireeshpunathil](https://github.com/gireeshpunathil) - **Gireesh Punathil** | |
| * [jake32321](https://github.com/jake32321) - **Jake Reed** | |
| * [jonchurch](https://github.com/jonchurch) - **Jon Church** | |
| * [lekanikotun](https://github.com/lekanikotun) - **Troy Goode** | |
| * [marsonya](https://github.com/marsonya) - **Lekan Ikotun** | |
| * [mastermatt](https://github.com/mastermatt) - **Matt R. Wilson** | |
| * [maxakuru](https://github.com/maxakuru) - **Max Edell** | |
| * [mlrawlings](https://github.com/mlrawlings) - **Michael Rawlings** | |
| * [rodion-arr](https://github.com/rodion-arr) - **Rodion Abdurakhimov** | |
| * [sheplu](https://github.com/sheplu) - **Jean Burellier** | |
| * [tarunyadav1](https://github.com/tarunyadav1) - **Tarun yadav** | |
| * [tunniclm](https://github.com/tunniclm) - **Mike Tunnicliffe** | |
| </details> | |
| ## License | |
| [MIT](LICENSE) | |
| [appveyor-image]: https://badgen.net/appveyor/ci/dougwilson/express/master?label=windows | |
| [appveyor-url]: https://ci.appveyor.com/project/dougwilson/express | |
| [coveralls-image]: https://badgen.net/coveralls/c/github/expressjs/express/master | |
| [coveralls-url]: https://coveralls.io/r/expressjs/express?branch=master | |
| [github-actions-ci-image]: https://badgen.net/github/checks/expressjs/express/master?label=linux | |
| [github-actions-ci-url]: https://github.com/expressjs/express/actions/workflows/ci.yml | |
| [npm-downloads-image]: https://badgen.net/npm/dm/express | |
| [npm-downloads-url]: https://npmcharts.com/compare/express?minimal=true | |
| [npm-install-size-image]: https://badgen.net/packagephobia/install/express | |
| [npm-install-size-url]: https://packagephobia.com/result?p=express | |
| [npm-url]: https://npmjs.org/package/express | |
| [npm-version-image]: https://badgen.net/npm/v/express | |
| [ossf-scorecard-badge]: https://api.scorecard.dev/projects/github.com/expressjs/express/badge | |
| [ossf-scorecard-visualizer]: https://ossf.github.io/scorecard-visualizer/#/projects/github.com/expressjs/express | |
| [Code of Conduct]: https://github.com/expressjs/express/blob/master/Code-Of-Conduct.md | |