Deploy an Astro site

Astro Open external link is an all-in-one web framework for building fast, content-focused websites. By default, Astro builds websites that have zero JavaScript runtime code.

Refer to the Astro Docs Open external link to learn more about Astro or for assistance with an Astro project.

In this guide, you will create a new Astro application and deploy it using Cloudflare Pages.

​​ Set up a new project

To use create-cloudflare to create a new Astro project, run the following command:

$ npm create cloudflare@latest my-astro-app -- --framework=astro

Astro will ask:

1. Which project type you would like to set up. Your answers will not affect the rest of this tutorial. Select an answer ideal for your project.

2. If you want to initialize a Git repository. We recommend you to select No and follow this guide’s Git instructions below. If you select Yes, do not follow the below Git instructions precisely but adjust them to your needs.

create-cloudflare will then install dependencies, including the Wrangler CLI and the @astrojs/cloudflare adapter, and ask you setup questions.

​​ Astro configuration

You can deploy an Astro Server-side Rendered (SSR) site to Cloudflare Pages using the @astrojs/cloudflare adapter Open external link . SSR sites render on Pages Functions and allow for dynamic functionality and customizations.

Add the @astrojs/cloudflare adapter Open external link to your project’s package.json by running:

$ npm run astro add cloudflare

​​ Before you continue

All of the framework guides assume you already have a fundamental understanding of Git Open external link . If you are new to Git, refer to this summarized Git handbook Open external link on how to set up Git on your local machine.

If you clone with SSH, you must generate SSH keys Open external link on each computer you use to push or pull from GitHub.

Refer to the GitHub documentation Open external link and Git documentation Open external link for more information.

​​ Create a GitHub repository

Create a new GitHub repository by visiting repo.new Open external link . After creating a new repository, go to your newly created project directory to prepare and push your local application to GitHub by running the following commands in your terminal:

$ git init
$ git remote add origin https://github.com/<your-gh-username>/<repository-name>
$ git add .
$ git commit -m "Initial commit"
$ git branch -M main
$ git push -u origin main

​​ Deploy with Cloudflare Pages

​​ Deploy via the create-cloudflare CLI (C3)

If you use create-cloudflare(C3) Open external link to create your new Astro project, C3 will install all dependencies needed for your project and prompt you to deploy your project via the CLI. If you deploy, your site will be live and you will be provided with a deployment URL.

​​ Deploy via the Cloudflare dashboard

1. Log in to the Cloudflare dashboard Open external link and select your account.
2. In Account Home, select Workers & Pages > Create application > Pages > Connect to Git.

You will be asked to authorize access to your GitHub account if you have not already done so. Cloudflare needs this so that it can monitor and deploy your projects from the source. You may narrow access to specific repositories if you prefer; however, you will have to manually update this list within your GitHub settings Open external link when you want to add more repositories to Cloudflare Pages.

Select the new GitHub repository that you created and, in the Set up builds and deployments section, provide the following information:

Optionally, you can customize the Project name field. It defaults to the GitHub repository’s name, but it does not need to match. The Project name value is assigned as your *.pages.dev subdomain.

After completing configuration, select Save and Deploy.

You will see your first deployment in progress. Pages installs all dependencies and builds the project as specified.

Cloudflare Pages will automatically rebuild your project and deploy it on every new pushed commit.

Additionally, you will have access to preview deployments, which repeat the build-and-deploy process for pull requests. With these, you can preview changes to your project with a real URL before deploying them to production.

​​ Modes

There are currently two modes supported when using Pages Functions with the @astrojs/cloudflare Open external link adapter.

1. Advanced mode: This mode is used when you want to run your Function in advanced mode. This mode picks up the _worker.js in dist, or a directory mode where Pages will compile the Worker out of a Functions folder in the project root.

2. Directory mode: This mode is used when you want to run your Pages Function in directory mode. In this mode, the adapter will compile the client-side part of your application the same way, but it will move the Worker into a functions folder in the project root. The adapter will allow you to access your Pages Functions from your functions folder. This allows you to add Pages Plugins and Middleware which can be checked into version control.

To use directory mode, modify your astro.config.mjs file to add mode: "directory" to the adapter configuration:

astro.config.mjs
import { defineConfig } from "astro/config";
import cloudflare from "@astrojs/cloudflare";

export default defineConfig({
  output: 'server',
  adapter: cloudflare({ mode: "directory" }),
});

​​ Use bindings in your Astro application

A binding allows your application to interact with Cloudflare developer products, such as KV, Durable Object, R2, and D1 Open external link .

Use bindings in Astro components and API routes by using context.local from Astro Middleware Open external link to access the Cloudflare runtime which amongst other fields contains the Cloudflare’s environment and consecutively any bindings set for your application.

Refer to the following example of how to access a KV namespace with TypeScript.

First, you need to define Cloudflare runtime and KV type by updating the env.d.ts:

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

type KVNamespace = import("@cloudflare/workers-types").KVNamespace;
type ENV = {
  // replace `MY_KV` with your KV namespace
  MY_KV: KVNamespace;
};

// Depending on your adapter mode
// use `AdvancedRuntime<ENV>` for advance runtime mode
// use `DirectoryRuntime<ENV>` for directory runtime mode
type Runtime = import("@astrojs/cloudflare").AdvancedRuntime<ENV>;
declare namespace App {
  interface Locals extends Runtime {}
}

You can then access your KV from an API endpoint in the following way:

src/pages/my-endpoint.ts
import type { APIContext } from "astro";

export async function get({locals}: APIContext) => {
  // the type KVNamespace comes from the @cloudflare/workers-types package
  const { MY_KV } = locals.runtime.env;

  return {
    // ...
  };
};

Besides endpoints, you can also use bindings directly from your Astro components:

src/pages/index.astro
---
const myKV = Astro.locals.runtime.env.MY_KV;
const value = await myKV.get("key");
---
<div>{value}</div>

To learn more about the Astro Cloudflare runtime, refer to the Access to the Cloudflare runtime Open external link in the Astro documentation.

​​ Learn more

By completing this guide, you have successfully deployed your Astro site to Cloudflare Pages. To get started with other frameworks, refer to the list of Framework guides.