Google has released a tool that helps brands determine how well Web sites perform when visitors use tablets, smartphones, and desktops.

The tool requires an individual to type in a Web site address and click on return. Google scores the site and offers a more detailed report that makes suggestions about things the site's webmaster may want to fix to improve the experience for individuals searching on any site.

PageSpeed Insights powers the scores, ranking for mobile-friendliness, mobile speed, and desktop speed. It quickly serves information at a glance, based on the quality of the experience customers have when browsing from their phones, mobile speed, and desktop speed.

Google estimates that people are five- imes more likely to leave a mobile site that doesn't serve information quickly in a well-organized manner. The tool provides feedback on the use of legible font sizes, configured viewports, size tap targets, intestinal content, and plugins.

Google also estimates that nearly half of all visitors will leave a mobile site if the pages don’t load within three seconds. To speed load times, the tool may suggest eliminating render-blocking JavaScript and CSS in above-the-fold content, or enabling compression.

Earlier this week, Google released a product road map for its program the Accelerated Mobile Project (AMP). It outlines the goals and objectives for new features and enhancements, focusing on ads, analytics, formats, and access.

In July, August and September of 2016, Google plans to focus on enabling AMP for Ads for creative demand across the buyer and publisher networks, and enable deeper integration of ads with AMP landing pages for buy-side and sell-side platforms. The company also will focus on features for its other three pillars, access, analytics, and formats.