1 [![Express Logo](https://i.cloudup.com/zfY6lL7eFa-3000x3000.png)](http://expressjs.com/)
3 Fast, unopinionated, minimalist web framework for [node](http://nodejs.org).
5 [![NPM Version][npm-image]][npm-url]
6 [![NPM Downloads][downloads-image]][downloads-url]
7 [![Linux Build][travis-image]][travis-url]
8 [![Windows Build][appveyor-image]][appveyor-url]
9 [![Test Coverage][coveralls-image]][coveralls-url]
12 var express = require('express')
15 app.get('/', function (req, res) {
16 res.send('Hello World')
24 This is a [Node.js](https://nodejs.org/en/) module available through the
25 [npm registry](https://www.npmjs.com/).
27 Before installing, [download and install Node.js](https://nodejs.org/en/download/).
28 Node.js 0.10 or higher is required.
30 Installation is done using the
31 [`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
37 Follow [our installing guide](http://expressjs.com/en/starter/installing.html)
43 * Focus on high performance
44 * Super-high test coverage
45 * HTTP helpers (redirection, caching, etc)
46 * View system supporting 14+ template engines
48 * Executable for generating applications quickly
52 * [Website and Documentation](http://expressjs.com/) - [[website repo](https://github.com/expressjs/expressjs.com)]
53 * [#express](https://webchat.freenode.net/?channels=express) on freenode IRC
54 * [GitHub Organization](https://github.com/expressjs) for Official Middleware & Modules
55 * Visit the [Wiki](https://github.com/expressjs/express/wiki)
56 * [Google Group](https://groups.google.com/group/express-js) for discussion
57 * [Gitter](https://gitter.im/expressjs/express) for support and discussion
59 **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).
63 If you discover a security vulnerability in Express, please see [Security Policies and Procedures](Security.md).
67 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:
69 Install the executable. The executable's major version will match Express's:
72 $ npm install -g express-generator@4
78 $ express /tmp/foo && cd /tmp/foo
95 The Express philosophy is to provide small, robust tooling for HTTP servers, making
96 it a great solution for single page applications, web sites, hybrids, or public
99 Express does not force you to use any specific ORM or template engine. With support for over
100 14 template engines via [Consolidate.js](https://github.com/tj/consolidate.js),
101 you can quickly craft your perfect framework.
105 To view the examples, clone the Express repo and install the dependencies:
108 $ git clone git://github.com/expressjs/express.git --depth 1
113 Then run whichever example you want:
116 $ node examples/content-negotiation
121 To run the test suite, first install the dependencies, then run `npm test`:
130 The original author of Express is [TJ Holowaychuk](https://github.com/tj)
132 The current lead maintainer is [Douglas Christopher Wilson](https://github.com/dougwilson)
134 [List of all contributors](https://github.com/expressjs/express/graphs/contributors)
140 [npm-image]: https://img.shields.io/npm/v/express.svg
141 [npm-url]: https://npmjs.org/package/express
142 [downloads-image]: https://img.shields.io/npm/dm/express.svg
143 [downloads-url]: https://npmjs.org/package/express
144 [travis-image]: https://img.shields.io/travis/expressjs/express/master.svg?label=linux
145 [travis-url]: https://travis-ci.org/expressjs/express
146 [appveyor-image]: https://img.shields.io/appveyor/ci/dougwilson/express/master.svg?label=windows
147 [appveyor-url]: https://ci.appveyor.com/project/dougwilson/express
148 [coveralls-image]: https://img.shields.io/coveralls/expressjs/express/master.svg
149 [coveralls-url]: https://coveralls.io/r/expressjs/express?branch=master
150 [gratipay-image-visionmedia]: https://img.shields.io/gratipay/visionmedia.svg
151 [gratipay-url-visionmedia]: https://gratipay.com/visionmedia/
152 [gratipay-image-dougwilson]: https://img.shields.io/gratipay/dougwilson.svg
153 [gratipay-url-dougwilson]: https://gratipay.com/dougwilson/