Deploy your Astro Site to GitHub Pages

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

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.

  1. Set the site and, if needed, 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 should be https://<YOUR_USERNAME>.github.io or https://my-custom-domain.com
    • base should be your repository’s name starting with a forward slash, for example /my-repo. This is so that Astro understands your website’s root is /my-repo, rather than the default /.
  2. Create a new file in your project at .github/workflows/deploy.yml and paste in the YAML below.

    deploy.yml
    name: Github Pages Astro CI
    
    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@v2          
          - name: Install, build, and upload your site
            uses: withastro/action@v0
    
      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@v1
  3. On GitHub, go to your repository’s Settings tab and find the Pages section of the settings.

  4. Choose GitHub Actions as the Source of your site and press Save.

  5. 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.

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