Deploy your Astro Site to Cloudflare Pages

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You can deploy your Astro project on Cloudflare Pages, a platform for frontend developers to collaborate and deploy static (JAMstack) and SSR websites.

This guide includes:

How to deploy through the Cloudflare Pages Dashboard
How to deploy using Wrangler, the Cloudflare CLI
How to deploy an SSR site using @astrojs/cloudflare

Prerequisites

To get started, you will need:

A Cloudflare account. If you don’t already have one, you can create a free Cloudflare account during the process.
Your app code pushed to a GitHub or a GitLab repository.

How to deploy a site with Git

Set up a new project on Cloudflare Pages.
Push your code to your git repository (GitHub, GitLab).
Log in to the Cloudflare dashboard and select your account in Account Home > Pages.
Select Create a new Project and the Connect Git option.
Select the git project you want to deploy and click Begin setup
Use the following build settings:
- Framework preset: Astro
- Build command: npm run build
- Build output directory: dist
Click the Save and Deploy button.

How to deploy a site using Wrangler

Install Wrangler CLI.
Authenticate Wrangler with your Cloudflare account using wrangler login.
Run your build command.
Deploy using npx wrangler pages deploy dist.

# Install Wrangler CLI
npm install -g wrangler
# Login to Cloudflare account from CLI
wrangler login
# Run your build command
npm run build
# Create new deployment
npx wrangler pages deploy dist

After your assets are uploaded, Wrangler will give you a preview URL to inspect your site. When you log into the Cloudflare Pages dashboard, you will see your new project.

Enabling Preview locally with Wrangler

For the preview to work, you must install wrangler

pnpm add wrangler --save-dev

It’s then possible to update the preview script to run wrangler instead of Astro’s built-in preview command:

"preview": "wrangler pages dev ./dist"

How to deploy an SSR site

You can build an Astro SSR site for deployment to Cloudflare Pages using the @astrojs/cloudflare adapter.

Follow the steps below to set up the adapter. You can then deploy using either of the approaches documented above.

Quick install

Add the Cloudflare adapter to enable SSR in your Astro project 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.

npx astro add cloudflare

Manual install

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

Add the @astrojs/cloudflare 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/cloudflare
```

Add the following to your astro.config.mjs file:

import { defineConfig } from 'astro/config';
import cloudflare from '@astrojs/cloudflare';

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

Modes

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

Advanced mode: This mode is used when you want to run your function in advanced mode which 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.

If no mode is set, the default is "advanced".
directory mode: This mode is used when you want to run your function in directory mode, which means the adapter will compile the client side part of your app the same way, but it will move the worker script into a functions folder in the project root. The adaptor will only ever place a [[path]].js in that folder, allowing you to add additional plugins and pages middleware which can be checked into version control.
astro.config.mjs
```
export default defineConfig({
  adapter: cloudflare({ mode: "directory" }),
});
```

Using Pages Functions

Pages Functions enable you to run server-side code to enable dynamic functionality without running a dedicated server.

To get started, create a /functions directory at the root of your project. Writing your Functions files in this directory automatically generates a Worker with custom functionality at the predesignated routes. To learn more about writing Functions, see the Pages Functions documentation.

📚 Read more about SSR in Astro.

Troubleshooting

If you’re encountering errors, double-check the version of node you’re using locally (node -v) matches the version you’re specifying in the environment variable.

Cloudflare requires Node v16.13, which is a more recent version than Astro’s out-of-the-box minimum, so double check you’re using at least v16.13.

Client-side hydration may fail as a result of Cloudflare’s Auto Minify setting. If you see Hydration completed but contains mismatches in the console, make sure to disable Auto Minify under Cloudflare settings.