Package Reference

Remix V3 is composed of 38 single-purpose packages. Each package works independently and can be installed on its own, or you can use the remix meta-package to access everything through a single dependency.

Each package has three documentation pages:

• Overview --- What the package does and when to use it
• Tutorial --- A practical step-by-step guide
• Reference --- Complete API documentation

Installing

The Meta-Package

The easiest way to get started is to install the remix meta-package, which re-exports every package:

npm install remix@next

Then import from any sub-path:

import { createRouter } from 'remix/fetch-router'
import { createRequestListener } from 'remix/node-fetch-server'
import { RoutePattern } from 'remix/route-pattern'

Individual Packages

Every package is also available individually as @remix-run/<package-name>:

npm install @remix-run/fetch-router
npm install @remix-run/node-fetch-server

---

Routing & Server

Package	Description
fetch-router	The core router. Maps URL patterns to request handlers using the Fetch API.
route-pattern	URL pattern matching, parsing, and generation with type-safe params.
node-fetch-server	Adapts Fetch API handlers to Node.js http.createServer().
fetch-proxy	Creates fetch functions that forward requests to another server.

UI & Rendering

Package	Description
component	JSX components with server-side rendering, client hydration, and animations.
html-template	Tagged template literal for safe HTML rendering with auto-escaping.

Data

Package	Description
data-table	A typed relational query toolkit for defining tables and running queries.
data-table-sqlite	SQLite adapter for data-table.
data-table-postgres	PostgreSQL adapter for data-table.
data-table-mysql	MySQL adapter for data-table.
data-schema	Schema validation and type coercion for form data and JSON.

Authentication

Package	Description
auth	OAuth, OIDC, and credentials authentication with pluggable providers.
auth-middleware	Router middleware that protects routes with authentication.

Sessions & Cookies

Package	Description
session	Session management with pluggable storage backends.
session-middleware	Router middleware that loads and saves sessions automatically.
session-storage-redis	Redis-backed session storage.
session-storage-memcache	Memcache-backed session storage.
cookie	Cookie parsing, serialization, and cryptographic signing.

Middleware

Package	Description
compression-middleware	Automatic gzip/brotli response compression.
cors-middleware	Cross-Origin Resource Sharing (CORS) headers.
csrf-middleware	Cross-Site Request Forgery (CSRF) protection.
cop-middleware	Tokenless cross-origin protection using Sec-Fetch headers.
static-middleware	Serves static files with ETags and range requests.
logger-middleware	Request/response logging.
method-override-middleware	Allows HTML forms to use PUT, PATCH, and DELETE.
form-data-middleware	Parses form data and makes it available on the request context.
async-context-middleware	Provides AsyncLocalStorage integration for request context.

File Handling

Package	Description
multipart-parser	Low-level streaming multipart/form-data parser.
form-data-parser	High-level form data parser with file upload support.
file-storage	File storage abstraction with pluggable backends.
file-storage-s3	Amazon S3 file storage backend.
lazy-file	Lazy-loaded file objects that defer reading until needed.
fs	Filesystem utilities built on web standards.
tar-parser	Streaming tar archive parser.

Utilities

Package	Description
headers	Typed HTTP header parsing and serialization.
response	Response helpers for HTML, files, redirects, and compression.
mime	MIME type detection and content-type utilities.
assert	Cross-runtime assertion utilities.
test	Test runner for Remix applications.