Google has announced its own tool which will help you to measure a website’s speed and mobile-friendliness. Google states,
Today we’re introducing an easy way to measure your site’s performance across devices—from mobile to desktop—and give you a list of specific fixes that can help your business connect more quickly with people online.
The site takes your URL and measures it on a scale from 1-100, your mobile design, and loading speed. It checks things such as CSS, HTML, scripts, and images in order to see the amount of time it takes for your website to load on the desktop as well as on a mobile device.