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Andy,

My robots file currently looks like this

User-agent: *

Disallow: /index.php?route=checkout/cart
Disallow: /index.php?route=account/return/insert
Disallow: /index.php?route=product/

Is this correctly set up?

I am currently using Opencart to run a fairly popular ecommerce website. I have done quite well in terms of rankings so far. However, the Opencart platform only goes so far.

There are endless amounts of crawl errors, from duplicate content down to missing meta tags. There is no easy way to add canonical tags. The pages that are being listed in the crawl errors seem to be mainly search URL's that i have no idea how Moz found them.

An example of the page is:

.....com/index.php?route=product/search&tag=home+office+flooring

Which has ten duplicate pages all missing meta tags.

I have used Google webmaster tools and htaccess to deny access to these pages with the slug "route=product/search" but it doesn't seem to work.

So my question to you guys is as follows:

Is it worth trying to fix these errors and do they have an effect on SEO?

If so, how do I prevent these errors that seem to grow at every crawl?

Cheers,

Danny

You wouldn't disrupt the collection of data, but you would need to run a cron job to keep updating it. It is not recommended that you store Google analytics locally & honestly it would make little difference to your speed and is more trouble than it's worth. Caching is not recommended by Google for a reason.

All though if your page speed is healthy your really have nothing to worry about. If your concern is just trying to get 100/100 on the page tests i have heard that this does the trick:

https://developers.google.com/speed/pagespeed/module/filter-make-google-analytics-async#description

Danny