The Express middleware modules listed here are maintained by the Expressjs team.
| Middleware module | Description | Replaces built-in function (Express 3) |
|---|---|---|
| body-parser | Parse HTTP request body. See also: body, co-body, and raw-body. | express.bodyParser |
| compression | Compress HTTP responses. | express.compress |
| connect-rid | Generate unique request ID. | NA |
| cookie-parser | Parse cookie header and populate req.cookies. See also cookies and keygrip. |
express.cookieParser |
| cookie-session | Establish cookie-based sessions. | express.cookieSession |
| cors | Enable cross-origin resource sharing (CORS) with various options. | NA |
| errorhandler | Development error-handling/debugging. | express.errorHandler |
| method-override | Override HTTP methods using header. | express.methodOverride |
| morgan | HTTP request logger. | express.logger |
| multer | Handle multi-part form data. | express.bodyParser |
| response-time | Record HTTP response time. | express.responseTime |
| serve-favicon | Serve a favicon. | express.favicon |
| serve-index | Serve directory listing for a given path. | express.directory |
| serve-static | Serve static files. | express.static |
| session | Establish server-based sessions (development only). | express.session |
| timeout | Set a timeout period for HTTP request processing. | express.timeout |
| vhost | Create virtual domains. | express.vhost |
These are some additional popular middleware modules.
Warning: This information refers to third-party sites, products, or modules that are not maintained by the Expressjs team. Listing here does not constitute an endorsement or recommendation from the Expressjs project team.
| Middleware module | Description |
|---|---|
| cls-rtracer | Middleware for CLS-based request id generation. An out-of-the-box solution for adding request ids into your logs. |
| connect-image-optimus | Optimize image serving. Switches images to .webp or .jxr, if possible. |
| error-handler-json | An error handler for JSON APIs (fork of api-error-handler.) |
| express-debug | Development tool that adds information about template variables (locals), current session, and so on. |
| express-partial-response | Filters out parts of JSON responses based on the fields query-string; by using Google API’s Partial Response. |
| express-simple-cdn | Use a CDN for static assets, with multiple host support. |
| express-slash | Handles routes with and without trailing slashes. |
| express-uncapitalize | Redirects HTTP requests containing uppercase to a canonical lowercase form. |
| helmet | Helps secure your apps by setting various HTTP headers. |
| join-io | Joins files on the fly to reduce the requests count. |
| passport | Authentication using “strategies” such as OAuth, OpenID and many others. See http://passportjs.org/ for more information. |
| static-expiry | Fingerprint URLs or caching headers for static assets. |
| view-helpers | Common helper methods for views. |
| sriracha-admin | Dynamically generate an admin site for Mongoose. |
For more middleware modules, see http-framework.