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Deploy your Astro Site to GitHub Pages

You can use GitHub Pages to host an Astro website directly from a repository on GitHub.com.

How to deploy

Section titled How to deploy

You can deploy an Astro site to GitHub Pages by using GitHub Actions to automatically build and deploy your site. To do this, your source code must be hosted on GitHub.

Astro maintains the official withastro/action to deploy your project with very little configuration. Follow the instructions below to deploy your Astro site to GitHub pages, and see the package README if you need more information.

Configure Astro for GitHub Pages

Section titled Configure Astro for GitHub Pages

Deploying to a github.io URL

Section titled Deploying to a github.io URL

Set the site and base options in astro.config.mjs.

astro.config.mjs
import { defineConfig } from 'astro/config'


export default defineConfig({
  site: 'https://astronaut.github.io',
  base: 'my-repo',
})

site

Section titled site

The value for site must be one of the following:

  • The following URL based on your username: https://<username>.github.io
  • The random URL autogenerated for a GitHub Organization’s private page: https://<random-string>.pages.github.io/

base

Section titled base

A value for base may be required so that Astro will treat your repository name (e.g. /my-repo) as the root of your website.

The value for base should be your repository’s name starting with a forward slash, for example /my-blog. This is so that Astro understands your website’s root is /my-repo, rather than the default /.

Using GitHub pages with a custom domain

Section titled Using GitHub pages with a custom domain

To configure Astro for using GitHub pages with a custom domain, set your domain as the value for site. Do not set a value for base:

astro.config.mjs
import { defineConfig } from 'astro/config'


export default defineConfig({
  site: 'https://example.com',
})

Configure a GitHub Action

Section titled Configure a GitHub Action

  1. Create a new file in your project at .github/workflows/deploy.yml and paste in the YAML below.

    deploy.yml
    name: Deploy to GitHub Pages
    

    on:
      # Trigger the workflow every time you push to the `main` branch
      # Using a different branch name? Replace `main` with your branch’s name
      push:
        branches: [ main ]
      # Allows you to run this workflow manually from the Actions tab on GitHub.
      workflow_dispatch:
    

    # Allow this job to clone the repo and create a page deployment
    permissions:
      contents: read
      pages: write
      id-token: write
    

    jobs:
      build:
        runs-on: ubuntu-latest
        steps:
          - name: Checkout your repository using git
            uses: actions/checkout@v4
          - name: Install, build, and upload your site
            uses: withastro/action@v2
            # with:
              # path: . # The root location of your Astro project inside the repository. (optional)
              # node-version: 20 # The specific version of Node that should be used to build your site. Defaults to 20. (optional)
              # package-manager: pnpm@latest # The Node package manager that should be used to install dependencies and build your site. Automatically detected based on your lockfile. (optional)
    

      deploy:
        needs: build
        runs-on: ubuntu-latest
        environment:
          name: github-pages
          url: ${{ steps.deployment.outputs.page_url }}
        steps:
          - name: Deploy to GitHub Pages
            id: deployment
            uses: actions/deploy-pages@v4

  2. On GitHub, go to your repository’s Settings tab and find the Pages section of the settings.

  3. Choose GitHub Actions as the Source of your site.

  4. Commit the new workflow file and push it to GitHub.

Your site should now be published! When you push changes to your Astro project’s repository, the GitHub Action will automatically deploy them for you.

More Deployment Guides