Express middleware

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

Additional middleware modules

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.

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-stormpath
User storage, authentication, authorization, SSO, and data security.

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.