How to Prevent Search Engine Indexing for Your Development Subdomain

When working on development or testing environments, you might want to keep things private and prevent search engines like Google from indexing your content. In this guide, we'll walk you through a few steps using a fictional example domain,, to ensure your development subdomain remains out of search engine results.

Robots.txt File

The first step is to create a robots.txt file in the root directory of your subdomain. For, you would create Open the file and add the following lines:

User-agent: *
Disallow: /

This instructs web crawlers not to access any content on the subdomain.

Meta Tag in HTML

To reinforce the noindex directive, you can add a meta tag within the <head> section of your HTML pages. Insert the following line:

<meta name="robots" content="noindex, nofollow">

Including this tag in the <head> of each page on your development subdomain ensures that search engines won't index the content.

HTTP Header

Alternatively, you can use an HTTP header to communicate with search engines. Set the X-Robots-Tag header to specify that the page should not be indexed. This can be configured in your web server or added through server-side code:

X-Robots-Tag: noindex, nofollow

Meta Tag on Main Page

For added assurance, you can include a meta tag in the main page of your development subdomain:

<meta name="googlebot" content="noindex, nofollow, noarchive, nosnippet">

This meta tag explicitly instructs Googlebot not to index, archive, or display snippets from your development pages.

By implementing these measures, you can significantly reduce the likelihood of your development subdomain, such as, appearing in search engine results. Keep in mind that while these steps are effective, some search engines may not fully adhere to these directives.

Remember to replace with your actual development subdomain when applying these changes to your project.

Happy coding! 🚀