Google has their own online tool to check your site for potential page speed and on site issues - Available here to use. If you wish to look at our own article on Google's page speed tool, you can read it here.
However, as far as we are concerned at SEO Services Dublin, a business owner cannot have too much data when it comes to a website's page speed data and metrics. With this in mind, we would recommend GT METRIX (link here) for all website owners who are taking a closer look at their site's performance. The site allows a user to input their url into the engine and sit back and wait for the (almost instant) results. By default, the indexing and testing engine runs the tests from their server in Canada. However, a user can sign up for a free account and specify the server of their choosing to run the on line test. Valuable information can be gleaned from this site and can better inform a business owner as to what is actually going on with their site.
Information provided includes actual site load speed, load time,size of website in KB's, resources currently being used on the site,site assets that are slowing down your site before it fully loads, code improvements, server status, .htaccess rules currently being used, image optimisation and a host of other great metrics and page scores.