Google’s PageSpeed Insights tool is handy for multiple reasons. First it is provided by Google, which makes it an effective way to test your site according to the criteria of the biggest search engine on the web. Also, Google Page Speed provides recommendations, if needed, to optimize your site from both a computer and a mobile point of view. Like most tools of this type, it provides an estimated performance rating of 0 to 100. It should be noted that Google Page Speed does not offer charts on loading times for viewing the site.
The pages and their analyzed resources can then be automatically optimized using either the PageSpeed online service or an optimization SDK. Their optimization SDK is a set of C++ libraries providing the same result as the online service. It now displays an overall score indicating how fast a page can be loaded.
The PageSpeed Insights user interface has been updated to bring it closer to the online version. Optimizing pages with PageSpeed Insights can improve the page loading speed by 25-60%, according to Google, when utilizing their online service. For their online service, the optimized pages and resources of a website are cached on Google's servers, and displayed to users from that location.
PageSpeed Insights is a set of open source tools for analyzing web page performance and optimizing web pages to improve their loading time. Google has recently released a new version of the PageSpeed Insights tool. This new version brings an interesting set of new features and improvements.
Customization options are also available to simulate the run time environment for mobile platforms. For example you may define the speed of the processor, the rendering engine of a specific device, and so on and so forth. The analysis tools are available as extensions for Firefox and Chrome, and also as a web service. An analysis API may also be used via .NET, JavaScript, Go, Java and a myriad of other languages.