Google supporting rel=”canonical” HTTP Headers!

Google start’s supporting canonical supporting HTTP header’s.Google made the change’s according to the webmaster’s feedback.The HTTP header’s syntax is described in details here:section 5 of IETF RFC 5988.

On a WebmasterCentral Blogpost Pierre Far, Webmaster Trends Analyst, notified this enhanced addition.He wrote”

To see the rel=”canonical” HTTP header in action, let’s look at the scenario of a website offering a white paper both as an HTML page and as a downloadable PDF alternative, under these two URLs:

http://www.example.com/white-paper.html
http://www.example.com/white-paper.pdf

In this case, the webmaster can signal to Google that the canonical URL for the PDF download is the HTML document by using a rel=”canonical” HTTP header when the PDF file is requested; for example:

GET /white-paper.pdf HTTP/1.1

Host: www.example.com

(...rest of HTTP request headers...)

HTTP/1.1 200 OK

Content-Type: application/pdf

Link: <http://www.example.com/white-paper.html>; rel="canonical"

Content-Length: 785710

(... rest of HTTP response headers...)

Another common situation in which rel=”canonical” HTTP headers may help is when a website serves the same file from multiple URLs (for example when using a content distribution network) and the webmaster wishes to signal to Google the preferred URL.”

To know more about canonical link element,watch this video:

[video=youtube;Cm9onOGTgeM]http://www.youtube.com/watch?v=Cm9onOGTgeM&feature=player_embedded[/video]

Published by Anirban Das,Zebra Techies,India​

 

Thanks for such a nice information.

 

Be careful with this, I've heard that it can be used to redirect your traffic if your site is hacked.

 

thanks for sharing

 

Nice Post!!! Thanks for this information.