Is it ok to use canonical version url on the same page ? I have installed wordpress site and found its showing me rel="canonical" tag on each and every page. for example on the page like http:// mysite. com/xyz/ Its showing me canonical url like this rel="canonical" href="http://mysite. com/xyz/ It automatically gets added on every new post with same url . It there any issue with this.?
If your site has identical or similar content that is available on the base of different URL you should use Rel="Canonical", it allows to point the URL which shall back in search engine. You can be sure that all features such as link juice etc will be transfered to the right site's version.
Canonical tags should be used on other duplicate version of pages but not on the preferred version page ?
canonical issue is with http and without http indexing in search engines, we can resolve this by 301 redirects.