**Help improve this page** 

To contribute to this user guide, choose the **Edit this page on GitHub** link that is located in the right pane of every page.

# View a preview of pull request content
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The Amazon EKS User Guide GitHub is configured to build and generate a preview of the docs site. This preview doesn’t have the full AWS theme, but it does check the content builds properly and links work.

![GitHub comment with preview URL](http://docs.aws.amazon.com/eks/latest/userguide/images/contribute-preview.png)


This preview is hosted at a temporary URL by AWS Amplify.

## View preview
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When you submit a pull request, AWS Amplify attempts to build and deploy a preview of the content.

If the build succeeds, **aws-amplify-us-east-1** adds a comment to the pull request that has a link to the preview. Choose the link to the right of "Access this pull request here" (as called out in the screenshot with a red outline).

If the build fails, the repo admins can see the logs and provide feedback.

**Note**  
If you haven’t contributed before, a project maintainer may need to approve running the build.

## Preview limitations
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The preview is built as a single large HTML file. It will be displayed as multiple pages when published.

 **What works:** 
+ Cross references (`xref`)
+ Links to the internet
+ Images
+ Content hosted from `samples/` 

 **What doesn’t work:** 
+ Links to other AWS content, using `type="documentation"`. This is because this content doesn’t exist in the preview environment.
+ The attribute `{aws}` will not display properly. The value of this changes based on the environment.