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@astrojs/ netlify

v4.0.1 GitHub npm Changelog

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This adapter allows Astro to deploy your hybrid or server rendered site to Netlify.

Learn how to deploy your Astro site in our Netlify deployment guide.

Why Astro Netlify

Section titled Why Astro Netlify

If you’re using Astro as a static site builder—its behavior out of the box—you don’t need an adapter.

If you wish to use on-demand rendering, also known as server-side rendering (SSR), Astro requires an adapter that matches your deployment runtime.

Netlify is a deployment platform that allows you to host your site by connecting directly to your GitHub repository. This adapter enhances the Astro build process to prepare your project for deployment through Netlify.

Installation

Section titled Installation

Add the Netlify adapter with the following astro add command. This will install the adapter and make the appropriate changes to your astro.config.mjs file in one step.

Terminal window
# Using NPM
npx astro add netlify
# Using Yarn
yarn astro add netlify
# Using PNPM
pnpm astro add netlify

Add dependencies manually

Section titled Add dependencies manually

If you prefer to install the adapter manually instead, complete the following two steps:

  1. Install the Netlify adapter to your project’s dependencies using your preferred package manager. If you’re using npm or aren’t sure, run this in the terminal:

    Terminal window
      npm install @astrojs/netlify

  2. Add two new lines to your astro.config.mjs project configuration file.

    astro.config.mjs
    import { defineConfig } from 'astro/config';
    import netlify from '@astrojs/netlify';
    

    export default defineConfig({
      output: 'server',
      adapter: netlify(),
    });

Usage

Section titled Usage

Read the full deployment guide here.

Follow the instructions to build your site locally. After building, you will have a .netlify/ folder containing both Netlify Functions in the .netlify/functions-internal/ folder and Netlify Edge Functions in the.netlify/edge-functions/ folder.

To deploy your site, install the Netlify CLI and run:

Terminal window
netlify deploy

The Netlify Blog post on Astro and the Netlify Docs provide more information on how to use this integration to deploy to Netlify.

Accessing edge context from your site

Section titled Accessing edge context from your site

Netlify Edge Functions provide a context object that includes metadata about the request such as a user’s IP, geolocation data, and cookies.

This can be accessed through the Astro.locals.netlify.context object:

---
const {
  geo: { city },
} = Astro.locals.netlify.context;
---


<h1>Hello there, friendly visitor from {city}!</h1>

If you’re using TypeScript, you can get proper typings by updating src/env.d.ts to use NetlifyLocals:

src/env.d.ts
/// <reference path="../.astro/types.d.ts" />
/// <reference types="astro/client" />


type NetlifyLocals = import('@astrojs/netlify').NetlifyLocals


declare namespace App {
  interface Locals extends NetlifyLocals {
    ...
  }
}

This is not available on prerendered pages.

Running Astro middleware in Edge Functions

Section titled Running Astro middleware in Edge Functions

Any Astro middleware is applied to pre-rendered pages at build-time, and to on-demand-rendered pages at runtime.

To implement redirects, access control or custom response headers for pre-rendered pages, run your middleware on Netlify Edge Functions by enabling the edgeMiddleware option:

astro.config.mjs
import { defineConfig } from 'astro/config';
import netlify from '@astrojs/netlify/functions';


export default defineConfig({
  output: 'server',
  adapter: netlify({
   edgeMiddleware: true,
  }),
});

Configuring edgeMiddleware: true will deploy your middleware as an Edge Function, and run it on all routes - including pre-rendered pages. However, locals specified in the middleware won’t be available to any pre-rendered pages, because they’ve already been fully-rendered at build-time.

Netlify Image CDN support

Section titled Netlify Image CDN support

This adapter uses the Netlify Image CDN to transform images on-the-fly without impacting build times. It’s implemented using an Astro Image Service under the hood.

Static sites & Redirects

Section titled Static sites &amp; Redirects

For static sites you usually don’t need an adapter. However, if you use redirects configuration in your Astro config, the Netlify adapter can be used to translate this to the proper _redirects format.

astro.config.mjs
import { defineConfig } from 'astro/config';
import netlify from '@astrojs/netlify/static';


export default defineConfig({
  adapter: netlify(),


  redirects: {
    '/blog/old-post': '/blog/new-post',
  },
});

Once you run astro build there will be a dist/_redirects file. Netlify will use that to properly route pages in production.

Caching Pages

Section titled Caching Pages

On-demand rendered pages without any dynamic content can be cached to improve performance and lower resource usage. Enabling the cacheOnDemandPages option in the adapter will cache all server-rendered pages for up to one year:

astro.config.mjs
export default defineConfig({
  output: 'server',
  adapter: netlify({
    cacheOnDemandPages: true,
  }),
});

This can be changed on a per-page basis by adding caching headers to your response:

src/pages/index.astro
---
import Layout from '../components/Layout.astro';


Astro.response.headers.set('CDN-Cache-Control', 'public, max-age=45, must-revalidate');
---


<Layout title="Astro on Netlify">
  {new Date()}
</Layout>

With fine-grained cache control, Netlify supports standard caching headers like CDN-Cache-Control or Vary. Refer to the docs to learn about implementing e.g. time to live (TTL) or stale while revalidate (SWR) caching: https://docs.netlify.com/platform/caching

Examples

Section titled Examples

Troubleshooting

Section titled Troubleshooting

For help, check out the #support channel on Discord. Our friendly Support Squad members are here to help!

You can also check our Astro Integration Documentation for more on integrations.

Contributing

Section titled Contributing

This package is maintained by Astro’s Core team. You’re welcome to submit an issue or PR!

Changelog

Section titled Changelog

See CHANGELOG.md for a history of changes to this integration.

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