You may be thinking of PageSpeed Service[0], which was a proxy service of Google&#x27;s. PageSpeed Service was shut down[3] in May of 2015. PageSpeed Insights[1] is a service of theirs that checks pages for usability and performance and is still active. There is also a PageSpeed Insights SDK[2] available, so you could self-host if they decide to stop offering the service.<p>[0] <a href="https:&#x2F;&#x2F;developers.google.com&#x2F;speed&#x2F;pagespeed&#x2F;service" rel="nofollow">https:&#x2F;&#x2F;developers.google.com&#x2F;speed&#x2F;pagespeed&#x2F;service</a><p>[1] <a href="https:&#x2F;&#x2F;developers.google.com&#x2F;speed&#x2F;pagespeed&#x2F;insights&#x2F;" rel="nofollow">https:&#x2F;&#x2F;developers.google.com&#x2F;speed&#x2F;pagespeed&#x2F;insights&#x2F;</a><p>[2] <a href="https:&#x2F;&#x2F;code.google.com&#x2F;p&#x2F;page-speed&#x2F;" rel="nofollow">https:&#x2F;&#x2F;code.google.com&#x2F;p&#x2F;page-speed&#x2F;</a><p>[3] <a href="http:&#x2F;&#x2F;techcrunch.com&#x2F;2015&#x2F;05&#x2F;06&#x2F;google-shuts-down-pagespeed-service-for-accelerating-websites&#x2F;" rel="nofollow">http:&#x2F;&#x2F;techcrunch.com&#x2F;2015&#x2F;05&#x2F;06&#x2F;google-shuts-down-pagespeed...</a>