Treehouse

Prevent Robot Indexing with Response Headers

By on  

Every so often you have parts of your website that would be better off not indexed by search engines.  API calls, search result pages, PDF documents -- all examples of responses which may not have value outside of the current user.  No we all know we can signal to the search engines not to index pages using a META tag, but oftentimes service calls and documents don't get the luxury of a META tag.  Luckily you can add a header to prevent these responses from being indexed.

The header name is X-Robots-Tag should be easy to add using the server-side language you prefer.  For example, adding this header with PHP may look like:

header('X-Robots-Tag: noindex');

If you're using a Django-based python site, the could would look like:

response['X-Robots-Tag'] = 'noindex'

This header can also be set within your .htaccess or httpd configuration files:

<Files ~ "\.pdf$">
  Header set X-Robots-Tag "noindex"
</Files>

The truth is that there's no guarantee that something your server serves wont be indexed by a search engine, but small tweaks like this can ensure your search engine standing can improve and that users don't find their way to "dead" parts of your site via search engines.

ydkjs-4.png

Recent Features

  • CSS vs. JS Animation: Which is&nbsp;Faster?

    How is it possible that JavaScript-based animation has secretly always been as fast — or faster — than CSS transitions? And, how is it possible that Adobe and Google consistently release media-rich mobile sites that rival the performance of native apps? This article serves as a point-by-point...

  • Introducing MooTools&nbsp;Templated

    One major problem with creating UI components with the MooTools JavaScript framework is that there isn't a great way of allowing customization of template and ease of node creation. As of today, there are two ways of creating: new Element Madness The first way to create UI-driven...

Incredible Demos

  • Creating the Treehouse Frog&nbsp;Animation

    Before we start, I want to say thank you to David for giving me this awesome opportunity to share this experience with you guys and say that I’m really flattered. I think that CSS animations are really great. When I first learned how CSS...

  • Create a CSS Flipping&nbsp;Animation

    CSS animations are a lot of fun; the beauty of them is that through many simple properties, you can create anything from an elegant fade in to a WTF-Pixar-would-be-proud effect. One CSS effect somewhere in between is the CSS flip effect, whereby there's...

Discussion

  1. Chris

    I have a big problem with spam registration on an ExpressionEngine site I help manage. Could this help? I have no development experience, fyi…

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!