HTTP Header Canonical Tags

[AndrewAkesson]

I want to be able to add canonical tags to http headers of individual URL's using .htacess, but I can't find any examples for how to do this.

The only example I found was when specifying a file: http://www.seomoz.org/blog/how-to-advanced-relcanonical-http-headers

N.B. It's not possible to add regular canonical tags to the of my pages as they're dynamically generated.

I was trying to add the following to the .htaccess in order to add a canonical tag in the header of the page http://frugal-father.com/is-finance-in-the-uk-too-london-centric/, but I've checked with Live HTTP headers and the canonical line isn't showing :

<files "is-finance-in-the-uk-too-london-centric="" "="">Header add Link "<http: frugal-father.com="">; rel="canonical"'</http:></files>

Any ideas?

[AndrewAkesson]

I've cracked it with the following:

<filesmatch "="" is-finance-in-the-uk-too-london-centric="" $"=""></filesmatch>

Header set Link "<http://frugal-father.com/>; rel="canonical""

<filesmatch "="" charity-skydiving-at-a-uk-parachute-centre="" $"=""></filesmatch>

Header set Link "<http://frugal-father.com/>; rel="canonical""

I can now add as many files matches and header sets as I like within the IfModule, and the canonical tags appear in the HTTP header.

For anyone else reading this, it may need tweaking depending on which version of Apache you're using. i.e. 'FilesMatch' and 'Head set Link' could be 'Files' or 'Header add Link'.