title: What is the name of the Google PageSpeed User Agent?
body: <p><a href="https://developers.google.com/speed/docs/insights/faq#whyonlinediff" rel="noreferrer">This page</a> indicates that it uses a custom user agent but it does not mention the name. I would like to be able to run some logic if the user agent is from PageSpeed. What is the name of the Google PageSpeed user agent?</p>