Fastify

Run Fastify apps in server mode on Hostinger Node.js hosting, covering hPanel build settings, 0.0.0.0 host binding, PORT configuration, and logging tips.

High-performance Node.js HTTP framework. Lower overhead than Express, schema-based validation out of the box. Hostinger runs Fastify apps in server mode.

app_type: fastify

Server mode

Fastify is server-only.

package.json

{
  "scripts": {
    "start": "node server.js",
    "dev": "node --watch server.js"
  },
  "dependencies": {
    "fastify": "^4.28.0"
  }
}

For TypeScript:

{
  "scripts": {
    "build": "tsc",
    "start": "node dist/server.js"
  }
}

Minimal server.js

import Fastify from 'fastify';

const fastify = Fastify({ logger: true });

fastify.get('/', async () => ({ hello: 'world' }));

const start = async () => {
  try {
    await fastify.listen({
      port: process.env.PORT ?? 3000,
      host: '0.0.0.0',
    });
  } catch (err) {
    fastify.log.error(err);
    process.exit(1);
  }
};
start();

hPanel settings

Plain JavaScript:

Field	Value
Application type	fastify
Build script	— (leave blank)
Output directory	— (leave blank)
Entry file	server.js

TypeScript:

Field	Value
Application type	fastify
Build script	build
Output directory	dist
Entry file	dist/server.js

Static mode

Not applicable. To serve static files, use @fastify/static:

import fastifyStatic from '@fastify/static';
fastify.register(fastifyStatic, { root: path.join(__dirname, 'public') });

Notes

• Listen on 0.0.0.0 and process.env.PORT — Fastify's default host is 127.0.0.1, which isn't reachable from outside the container.

• Use Fastify's built-in logger (logger: true) so request logs show up in Hostinger's build/runtime logs.

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Last updated: July 21, 2026