The crawl diagnosis indicated that my domain www.mydomain.com is duplicate with www.mydomain.com/index.php. How can I correct this issue?

[jsevilla]

How can I fix this issue when crawl diagnosis indicated that my www.mydomain.com is duplicate with www.mydomain.com/index.php? That suppose to be the same page and not duplicate, right?

[RTG]

Hi,

you need a cannonical-tag. Put this in the head of your index.php

<link rel='<a class="attribute-value">canonical</a>' href='[http://www.yourdomain.com](view-source:http://www.energiehoch3.de/anbieter/strom/stromanbieter-preise.html)'/> 

[Dave_Whitty]

use the canonical tag, or do a 301 redirect. Canonical is the best option.

[BlueprintMarketing]

Please Look here

http://support.google.com/webmasters/bin/answer.py?hl=en&answer=139394

You can specify a canonical URL in two ways:

• Add a rel="canonical" link to the  section of the non-canonical version of each HTML page.

  To specify a canonical link to the page http://www.example.com/product.php?item=swedish-fish, create a  element as follows:

  Copy this link into the  section of all non-canonical versions of the page, such as http://www.example.com/product.php?item=swedish-fish&sort=price.

  If you publish content on both http://www.example.com/product.php?item=swedish-fish and https://www.example.com/product.php?item=swedish-fish, you can specify the canonical version of the page. Create the element:

  Add this link to the  section of https://www.example.com/product.php?item=swedish-fish.

• Indicate the canonical version of a URL by responding with the Link rel="canonical" HTTP header. Addingrel="canonical" to the head section of a page is useful for HTML content, but it can't be used for PDFs and other file types indexed by Google Web Search. In these cases you can indicate a canonical URL by responding with the Link rel="canonical" HTTP header, like this (note that to use this option, you'll need to be able to configure your server):```
  Link: <http: www.example.com="" downloads="" white-paper.pdf="">; rel="canonical"</http:>

  
  Google currently supports these link header elements for Web Search only.