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<a href="https://expressjs.com/"> <picture> <source media="(prefers-color-scheme: dark)" srcset="https://expressjs.com/images/logos/logo-express-white.svg"> <img alt="Express Logo" src="https://expressjs.com/images/logos/logo-express-black.svg" width="280"> </picture> </a>

Fast, unopinionated, minimalist web framework for Node.js.

Table of contents

NPM Version NPM Downloads Linux Build Test Coverage OpenSSF Scorecard Badge

Copy & paste — that's it
import express from 'express'

const app = express()

app.get('/', (req, res) => {
  res.send('Hello World')
})

app.listen(3000, () => {
  console.log('Server is running on http://localhost:3000')
})

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

PROTIP Be sure to read the migration guide to v5

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 @ladjs/consolidate, you can quickly craft your perfect framework.

Examples

To view the examples, clone the Express repository:

Copy & paste — that's it
git clone https://github.com/expressjs/express.git --depth 1 && cd express

Then install the dependencies:

Copy & paste — that's it
npm install

Then run whichever example you want:

Copy & paste — that's it
node examples/content-negotiation

Contributing

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 for more technical details on contributing.

This project has a Code of Conduct. By participating, you are expected to uphold this code.

Security Issues

If you discover a security vulnerability in Express, please see Security Policies and Procedures.

Running Tests

To run the test suite, first install the dependencies:

Copy & paste — that's it
npm install

Then run npm test:

Copy & paste — that's it
npm test

Current project team members

For information about the governance of the express.js project, see GOVERNANCE.md.

The original author of Express is TJ Holowaychuk

List of all contributors

TC (Technical Committee)

<details> <summary>TC emeriti members</summary>

TC emeriti members

</details>

Triagers

<details> <summary>Triagers emeriti members</summary>

Emeritus Triagers

</details>

License

MIT