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Quickstart for GitHub Codespaces

Try out GitHub Codespaces in 5 minutes.

GitHub Codespaces は、GitHub Team または GitHub Enterprise Cloud を使用する Organization で利用できます。 GitHub Free および GitHub Pro プランの個人ユーザーも、GitHub Codespaces を制限付きのベータ リリースとして利用できます。 詳細については、「GitHub's products」を参照してください。


In this guide, you'll create a codespace from a template repository and explore some of the essential features available to you within the codespace.

From this quickstart, you'll learn how to create a codespace, connect to a forwarded port to view your running application, use version control in a codespace, and personalize your setup with extensions.

For more information on exactly how GitHub Codespaces works, see the companion guide "Deep dive into GitHub Codespaces."

Creating your codespace

  1. Navigate to the template repository and select Use this template.

  2. 新しいリポジトリの所有者を選び、リポジトリ名を入力し、希望のプライバシー設定を選んで、 [テンプレートからリポジトリを作成する] をクリックします。

  3. 新しく作成されたリポジトリのメイン ページで、 [ コード] ボタンをクリックして、 [Codespaces] タブを選びます。

    [New codespace] ボタン

    このタブが表示されない場合、GitHub Codespaces を使うことはできません。 GitHub Codespaces へのアクセスについて詳しくは、「Codespace を作成する」をご覧ください。

  4. [Codespaces] タブで、 [メインで codespace を作成する] をクリックします。

Running the application

Once your codespace is created, your repository will be automatically cloned into it. Now you can run the application and launch it in a browser.

  1. When the terminal becomes available, enter the command npm run dev. This example uses a Node.js project, and this command runs the script labeled "dev" in the package.json file, which starts up the web application defined in the sample repository.

    npm run dev in terminal

    If you're following along with a different application type, enter the corresponding start command for that project.

  2. When your application starts, the codespace recognizes the port the application is running on and displays a prompt to let you know it has been forwarded.

    Port forwarding toast

  3. Click Open in Browser to view your running application in a new tab.

Edit the application and view changes

  1. Switch back to your codespace and open the haikus.json file by double-clicking it in the Explorer.

  2. Edit the text field of the first haiku to personalize the application with your own haiku.

  3. Go back to the running application tab in your browser and refresh to see your changes.

    If you've closed the tab, open the Ports panel and click the Open in browser icon for the running port.

    Port Forwarding Panel

Committing and pushing your changes

Now that you've made a few changes, you can use the integrated terminal or the source view to commit and push the changes back to the remote.

  1. アクティビティ バーで、 [ソース管理] ビューをクリックします。 ソースコントロールビュー

  2. To stage your changes, click + next to the file you've changed, or next to Changes if you've changed multiple files and you want to stage them all.

    Source control side bar with staging button highlighted

  3. Type a commit message describing the change you've made.

    Source control side bar with a commit message

  4. To commit your staged changes, click the check mark at the top the source control side bar.

    Click the check mark icon

    You can push the changes you've made. This applies those changes to the upstream branch on the remote repository. You might want to do this if you're not yet ready to create a pull request, or if you prefer to create a pull request on GitHub.

  5. At the top of the side bar, click the ellipsis (...).

    Ellipsis button for View and More Actions

  6. In the drop-down menu, click Push.

  7. Go back to your new repository on GitHub and view the haikus.json file. Check that the change you made in your codespace has been successfully pushed to the repository.

Personalizing with an extension

Within a codespace, you have access to the Visual Studio Code Marketplace. For this example, you'll install an extension that alters the theme, but you can install any extension that is useful for your workflow.

Note: If you have Settings Sync turned on, any changes you make to your editor setup in the current codespace, such as changing your theme or keyboard bindings, are automatically synced to any other codespaces you open and any instances of Visual Studio Code that are signed into your GitHub account.

  1. In the left sidebar, click the Extensions icon.

  2. In the search bar, enter fairyfloss and install the fairyfloss extension.

    Add an extension

  3. Click Install in Codespaces.

  4. Select the fairyfloss theme by selecting it from the list.

    Select the fairyfloss theme

Next Steps

You've successfully created, personalized, and run your first application within a codespace but there's so much more to explore! Here are some helpful resources for taking your next steps with GitHub Codespaces.

Further reading