How to Preview HTML Code in GitHub

Ann Jul 09, 2026

Ever found yourself in need of a quick preview of your HTML code while working on a GitHub project? You're not alone. Here, we'll guide you through the process of previewing HTML code directly on GitHub, making your development workflow more efficient and intuitive.

a screen shot of a web page with the words'html input types '
a screen shot of a web page with the words'html input types '

GitHub offers a built-in feature to preview HTML, Markdown, and other text-based files. This feature is particularly useful when you want to see how your code will look without leaving the GitHub interface. Let's dive into the steps to enable this functionality.

Github Cheatsheet
Github Cheatsheet

Previewing HTML Files in GitHub

GitHub supports previewing HTML files out of the box. Here's how you can do it:

an image of a web page with the text'html input types'on it
an image of a web page with the text'html input types'on it

1. Navigate to the repository containing your HTML file. You can do this by clicking on the repository link in your GitHub dashboard or by using the search bar at the top of any GitHub page.

Previewing an Individual File

the github chat sheet is displayed in this screenshote screen graber
the github chat sheet is displayed in this screenshote screen graber

Once you're in the repository, follow these steps to preview an HTML file:

1. In the repository's file list, locate the HTML file you want to preview. GitHub supports previewing HTML files with the following extensions: .html, .htm, .md, .markdown, .mdown, and .mkd.

2. Click on the file to open it. You'll see the raw code by default. To preview the file, click the 'Raw' button located above the file's content. This will display the rendered output of your HTML code.

Embedding Images in HTML using <img>
Embedding Images in HTML using <img>

Previewing a Branch or Commit

You can also preview HTML files from a specific branch or commit. Here's how:

1. In the repository's file list, locate the branch or commit you want to preview. You can do this by clicking on the 'Branch: main' (or the current branch name) dropdown at the top of the file list and selecting the desired branch or commit hash.

login form html css
login form html css

2. Once you've selected the branch or commit, follow the same steps as above to preview the HTML file.

Customizing the Preview

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html and css login form
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a table that has some type of text in red and black on the bottom right hand corner
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the github chat sheet is displayed in pink and black
the github chat sheet is displayed in pink and black
HTML
HTML
the different types of html tags are shown in this screenshote screen graber
the different types of html tags are shown in this screenshote screen graber
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Basic Of HTML | Web Development | Programming
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the differences between github and git is shown in this graphic above it
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the different types of text are displayed on this page, and it appears to be in multiple
Html, Css Login Tamplates
Html, Css Login Tamplates
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html css download button animation

While GitHub's built-in preview feature works well for most HTML files, you might want to customize the preview experience for more complex projects. Here are a few ways to do that:

Using GitHub Pages

GitHub Pages is a static site hosting service provided by GitHub. You can use it to host your HTML project and get a more interactive preview. Here's how:

1. Create a new branch in your repository and name it 'gh-pages'.

2. Push your HTML files to the 'gh-pages' branch.

3. Go to your repository's settings page and scroll down to the 'GitHub Pages' section. Select the 'gh-pages' branch as the source and click 'Save'.

4. Once GitHub Pages has built your site, you'll see a message with a link to your live site. Click on this link to preview your HTML project.

Using an External Preview Service

For more complex projects, you might want to use an external preview service. These services can handle more advanced features like JavaScript execution and CSS styling. Here are a few popular ones:

  • CodeSandbox: A cloud-based editor that supports HTML, CSS, and JavaScript. You can connect it to your GitHub repository and preview your project in real-time.
  • StackBlitz: Similar to CodeSandbox, StackBlitz is a cloud-based IDE that supports a wide range of web development languages and frameworks.

To use these services, you'll typically need to connect your GitHub account and select the repository you want to preview. The service will then clone your project and provide a live preview link.

In the ever-evolving world of web development, having a quick and convenient way to preview your HTML code is invaluable. Whether you're using GitHub's built-in preview feature, GitHub Pages, or an external service, these tools can help streamline your workflow and ensure your projects look and function as intended. Happy coding!