The Joomla! Extensions Directory ™


SEO Canonicalisation Plugin Plugin

SEO Canonicalisation is a system plugin for Joomla! 1.5 and 2.5 that enables site 'canonicalisation', which means that when a user hits your site from another domain than your preferred (for example, www.sammoffatt.com.au instead of sammoffatt.com.au), Joomla! will redirect the user to the appropriate hostname. Previously this would have to be accomplished by utilising a .htaccess redirect.

If this extension is misconfigured it may prevent access to your site. It is recommended that you utilise the "Check Settings" option before publishing the extension. Additionally, you can rename the /plugins/system/canonicalization.php (1.5) or /plugins/system/canonicalization/canonicalization.php (2.5) file to diasble the extension temporarily to allow access to the administrator if you have enabled that option.

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2010-08-12
Reviews: 1
Does what its meant to do..!! just type your domain name with www.yoursite.com in the plugin..validate the domain and there you go..!
2010-07-29
Reviews: 4
A really simple plugin which does exactly what it was designed to do. It should certainly improve our search engine listings. Thanks! This is Brill!
2010-07-21
Reviews: 20
We have 6 domains all pointing to the same content, and despite my best efforts using .htaccess to fix via mod_rewrite, no luck whatsoever (our IT infrastructure are not helping).

This is especially good seeing as though we have a SSL certificate for our www domain name, and reaching it without www causes problems.

great plugin, thanks!
2010-07-19
Reviews: 11
I had totally overlooked this Google issue when developing some websites recently & when the issue was raised by the client, I needed a quick fix as simply modifying htaccess was not working. Within minutes, this brilliant plugin saved the day. Many thanks to the developer for saving my proverbial backside.
2010-07-05
Reviews: 1
The plugin works as described, I got my site topping at Google search now.
2010-04-25
Reviews: 10
Wonderfully simple and straight-forward. No more messing with htaccess. Hooray for Sam! :)
1 of 1 people found this review helpful
2010-04-03
Reviews: 3
This is a great plugin, but be very careful when using it. I accidentally clicked yes to enable on back end and I also was dumb enough to put in http in the correct domain and I lost my whole site.

I realise this is not the dev's fault but it is something that is easy to do if you are not careful.
Owner's reply

This is noted in the description above and instructions on how to resolve the situation is noted (by disabling the plugin). Users are encouraged to check their settings prior to applying the configuration as well.

2010-02-28
Reviews: 16
Great plugin, works. Just enable, add your domain, with or without www (and don't add http).
In my case, it redirects all non-www to www.

Setting your preferred domain tells Google which version of your site's URL (http://www. yourdomain .com or http:// yourdomain .com) you prefer.

Can reduce duplicate content in Google's index
2010-01-12
Reviews: 12
It is better than using htaccess file to do that. Simpler and faster. Great!
2010-01-04
Reviews: 24
i have to give it a 4 star bcoz it worked for me before..but its not working now..i am using joomla 1.5.15 and when i click on check setting it gives 500 internal server errpr message..dont know what the problem is there is no support url or some doucmentation so i have to post all here..and i cant post the website url here
Owner's reply

A PHP application throwing an Apache style 500 internal server error (as opposed to the Joomla! one with a custom error handler), especially on the checking application (14 lines of code on its own). Look at your server error logs to work out what its doing, because all the checker script does is grab 'target' out of the request global, 'HTTP_HOST', 'SERVER_NAME', 'REQUEST_URI' and 'HTTPS' off the server global - nothing I could imagine throwing a 500 error. I would suggest contacting your hosting provider to ask them if something has changed on their side because in the absence of a change in Joomla!, the cause is typically something funky a host is done.

With regards contact, on the page linked there is a forum and contact link on the left side of the page.

2009-12-19
Reviews: 2
We hade a lot of problems with duplicate or at least 100X the same content on our site because we use wildcard redirect for something else...

Now its redirecting like a charm... thanks a lot
2009-10-30
Reviews: 1
I recall having to mess with the .htaccess file on prior sites - this plugin makes redirecting for correct domain name resolution a snap. Google indexes correctly and accurately!
2009-10-23
Reviews: 1
I have to thank you for this little piece of gold.
This plugin saved me lots of time and frustation.
Had a website for a client with a custom Flash menu and header (and html menu) and it was imperative to use www.site.com or the flash menu wouldn't work for some reason with site.com ...and was a big project a few of the components were incompatible with sh404SEF or any kind of seo tool to redirect and the .htacces file wouldn't let us redirect 301 in the server, everytime we modified the file the whole server just crashed and had to reinstall the backup.
A hell of a nightmare.
I could see myself seating in front of my pc figuring out a way around this problem and came across this plugin... took me 10 seconds to install it and be the happiest guy in planet.

Use it if you need to redirect your site.com to www.site.com install the plugin and once you are in the plugin just type your www.site.com in the host field

Many thanks. =o)
2009-10-18
Reviews: 2
Love this simple extension that is set and forget. Use it on every website. Sure you can also do the same thing using htaccess but using this extension is just too easy.
2009-09-29
Reviews: 11
Good Plugin, Thank You!
2009-08-27
Reviews: 10
Very useful plug-in thank you!
2009-08-07
Reviews: 20
The title says it all forget the tricky business of modifying your .htaccess file and install this little beauty.

Highly recommended!
2009-05-14
Reviews: 3
i'm with godaddy and using multiple domains under one hosting account. they said that they could only modify the dns for one domain (which i totally doubt, but i don't know much about DNS), anyways, this works JUST as advertised. fantastic tool for anyone who wants a set it, and forget it SEO tool.
2009-04-11
Reviews: 2
Simple but effective. Very good when you have any domain aliases and need redirect all of them to only one address. Or if you need add "WWW" before your domain name even if user forgets to type it.

All your domains with/without www will be automatically moved to only one www.your-domain.com which can be specified by you. Ideal solution for SEO because Mr. Google will not find your other addresses (and penalize you for duplicate content) any more.

How it works?
Simply install from website > go to Extensions > Plugins then select System - Canonicalization. Then publish this plugin and don't forget to specify which domain (with or without www) will be used from now.
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