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Page Speed Checker. Google PageSpeed is a family of tools by Google Inc, designed to help a website's performance optimizations. It was introduced at Developer Conference in 2010. There are four main components of PageSpeed family tools: PageSpeed Module, consisting of mod_pagespeed for the Apache HTTP Server and ngx_pagespeed for the Nginx, PageSpeed Insights, PageSpeed Service, and PageSpeed Chrome DevTools extension. All of these components are built to identify faults in a website's compliance with Google's Web Performance Best Practices, as well as automate the adjustment process.