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i don't agree above answer.
Usually,we do it by our hands & brains.
Also some time you will think it is so complicate to analysis it.
And you can try it.

Once you have done this then see how your website is being optimized, in the sense if you have all the right ingredients in your site that co-relates with your keyword goal. I recommend seocentro.com...

I always check my website history and analyze my site on alexa.com . Just try this you will have better details of your website.