intro: 'Use the github.dev {% data variables.product.prodname_serverless %} from your repository or pull request to create and commit changes.'

**Note:** The github.dev {% data variables.product.prodname_serverless %} is currently in beta preview. You can provide feedback [in our Discussions](https://github.com/community/community/discussions/categories/general).

The {% data variables.product.prodname_serverless %} introduces a lightweight editing experience that runs entirely in your browser. With the {% data variables.product.prodname_serverless %}, you can navigate files and source code repositories from {% data variables.product.prodname_dotcom %}, and make and commit code changes. You can open any repository, fork, or pull request in the editor.

The {% data variables.product.prodname_serverless %} is available to everyone for free on {% data variables.product.prodname_dotcom_the_website %}.

The {% data variables.product.prodname_serverless %} provides many of the benefits of {% data variables.product.prodname_vscode %}, such as search, syntax highlighting, and a source control view. You can also use Settings Sync to share your own {% data variables.product.prodname_vscode_shortname %} settings with the editor. For more information, see "[Settings Sync](https://code.visualstudio.com/docs/editor/settings-sync)" in the {% data variables.product.prodname_vscode_shortname %} documentation.

The {% data variables.product.prodname_serverless %} runs entirely in your browser’s sandbox. The editor doesn’t clone the repository, but instead uses the [GitHub Repositories extension](https://code.visualstudio.com/docs/editor/github#_github-repositories-extension) to carry out most of the functionality that you will use. Your work is saved in the browser’s local storage until you commit it. You should commit your changes regularly to ensure that they're always accessible.

You can open any {% data variables.product.prodname_dotcom %} repository in the {% data variables.product.prodname_serverless %} in either of the following ways:

Both the {% data variables.product.prodname_serverless %} and {% data variables.product.prodname_github_codespaces %} allow you to edit your code straight from your repository. However, both have slightly different benefits, depending on your use case.

|| {% data variables.product.prodname_serverless %} | {% data variables.product.prodname_github_codespaces %}|

| **Start up** | The {% data variables.product.prodname_serverless %} opens instantly with a key-press and you can start using it right away, without having to wait for additional configuration or installation. | When you create or resume a codespace, the codespace is assigned a VM and the container is configured based on the contents of a `devcontainer.json` file. This set up may take a few minutes to create the environment. For more information, see "[Creating a codespace for a repository](/codespaces/developing-in-codespaces/creating-a-codespace-for-a-repository)." |

You can start your workflow in the {% data variables.product.prodname_serverless %} and continue working on a codespace. If you try to access the Run and Debug View or the Terminal, you'll be notified that they are not available in the {% data variables.product.prodname_serverless %}.

When you use the {% data variables.product.prodname_serverless %}, all actions are managed through the Source Control View, which is located in the Activity Bar on the left hand side. For more information on the Source Control View, see "[Version Control](https://code.visualstudio.com/docs/editor/versioncontrol)" in the {% data variables.product.prodname_vscode_shortname %} documentation.

You can use the {% data variables.product.prodname_serverless %} to work with an existing pull request.

1. Browse to the pull request you'd like to open in the {% data variables.product.prodname_serverless %}.

2. Press `.` to open the pull request in the {% data variables.product.prodname_serverless %}.

The {% data variables.product.prodname_serverless %} supports {% data variables.product.prodname_vscode_shortname %} extensions that have been specifically created or updated to run in the web. These extensions are known as "web extensions". To learn how you can create a web extension or update your existing extension to work for the web, see "[Web extensions](https://code.visualstudio.com/api/extension-guides/web-extensions)" in the {% data variables.product.prodname_vscode_shortname %} documentation.

Extensions that can run in the {% data variables.product.prodname_serverless %} will appear in the Extensions View and can be installed. If you use Settings Sync, any compatible extensions are also installed automatically. For information, see "[Settings Sync](https://code.visualstudio.com/docs/editor/settings-sync)" in the {% data variables.product.prodname_vscode_shortname %} documentation.

If you have issues opening the {% data variables.product.prodname_serverless %}, try the following:

- Use a non-incognito window in your browser to open the {% data variables.product.prodname_serverless %}.

- The {% data variables.product.prodname_serverless %} is currently supported in Chrome (and various other Chromium-based browsers), Edge, Firefox, and Safari. We recommend that you use the latest versions of these browsers.

- `.` may not work to open the {% data variables.product.prodname_serverless %} according to your local keyboard layout. In that case, you can open any {% data variables.product.prodname_dotcom %} repository in the {% data variables.product.prodname_serverless %} by changing the URL from `github.com` to `github.dev`.