It allows you to open your website using the Chrome browser in the background and then run all necessary tests at the same time. If the site is built with the AMP framework, this extension will automatically detect it.

A special tool that can help you to check the structure of your websites is PageSpeed Insights. You can also use Structured Data Testing and AMP Validator to check how well your website works with the AMP framework. The latter also includes the results of all the four basic checks, so you can quickly see where you need to make improvements and what the performance of your site is like.