Here are some tools we're using. These 4 sources will be used to measure each category
The items to be checked and the sources to retrieve metrics/results are established by Google. For our manual check please request here!
This is not only one tool of kind on Internet, there are plenty of tools like this available! They all function the same, if one shows bad results, any of this kind will show bad results.SEO Site Checkup
PageSpeed Insights (PSI) reports on the performance of a page on both mobile and desktop devices, and provides suggestions on how that page may be improved.
At the top of the report, PSI provides a score which summarizes the page’s performance. This score is determined by running Chrome DevTools Lighthouse extension to collect and analyze lab data about the page. A score of 90 or above is considered fast, and 50 to 90 is considered moderate. Below 50 is considered to be slow.PageSpeed Insights
The World Wide Web Consortium (W3C) is an international community that develops open standards to ensure the long-term growth of the Web. One old school developer tool is validator, that shows if the web page is written in correct way.W3 Validator
WebPagetest is a tool that was originally developed by AOL for use internally and was open-sourced in 2008 under a BSD license. This test requires a little bit of web knowledge to understand all testing results.Webpagetest.org