Supported Frameworks

Stackpad automatically detects your framework from your package.json and configuration files. Here’s a complete list of supported frameworks and how they’re detected.

Auto-detected frameworks

Framework	Detection	Default port	Build command	Start command
Next.js	next in dependencies	3000	next build	next start
Remix	@remix-run/node in dependencies	3000	remix build	remix-serve
Astro	astro in dependencies	4321	astro build	astro preview
Nuxt	nuxt in dependencies	3000	nuxt build	nuxt start
SvelteKit	@sveltejs/kit in dependencies	3000	vite build	node build
React Router v7	react-router v7+ in dependencies	3000	react-router build	react-router-serve
Express	express in dependencies	3000	From package.json	node entrypoint
Hono	hono in dependencies	3000	From package.json	node entrypoint
Static site	No server framework	80	From package.json	Static file server

Detection priority

If multiple frameworks are detected (e.g. Next.js + Express), Stackpad uses the following priority:

1. Next.js
2. Remix
3. Nuxt
4. SvelteKit
5. React Router v7
6. Astro
7. Hono
8. Express
9. Static site

Package managers

Stackpad detects your package manager from the lockfile:

Lockfile	Package manager	Install command
pnpm-lock.yaml	pnpm	pnpm install --frozen-lockfile
yarn.lock	yarn	yarn install --frozen-lockfile
package-lock.json	npm	npm ci

Output modes

Server-rendered (default)

Server-rendered frameworks (Next.js, Remix, Nuxt, etc.) run as a Node.js server. Stackpad builds the application and starts the server process.

Static export

If your framework is configured for static export (e.g. output: 'export' in Next.js), Stackpad builds the static files and serves them with a lightweight web server.

Standalone (Next.js)

When output: 'standalone' is set in next.config.js, Stackpad uses Next.js’s standalone output for a minimal production bundle. This is recommended for the best performance.

Nixpacks languages

For projects that don’t match a JavaScript framework above, Stackpad uses Nixpacks as a universal build system. Nixpacks automatically detects your language and generates an optimized Docker image.

Language	Detection
Laravel / PHP	composer.json with laravel/framework
Python	requirements.txt, pyproject.toml, or setup.py
Go	go.mod
Ruby	Gemfile
Rust	Cargo.toml
Java	pom.xml or build.gradle
Elixir	mix.exs
Zig	build.zig
C#	.csproj or .sln
F#	.fsproj

And 10+ more languages. See Framework detection for details on how Nixpacks works alongside JavaScript framework detection.

Detection priority

JavaScript frameworks are checked first. If none match, Nixpacks analyzes the project:

1. JavaScript framework detection (Next.js → Remix → Nuxt → … → Express)
2. Nixpacks language detection (Laravel → Python → Go → …)
3. Static site fallback

What’s next?

• Framework detection — how detection works in detail, including Nixpacks
• Templates — deploy pre-configured stacks
• Git push deploy — the full deployment pipeline