Understanding Web Page Test

Web Page Test offers analytics that can be helpful while troubleshooting and preventing potential issues with a site.

To find the Web Page Test, you first need to navigate to the Websites page and select a desired website
Once in the website's overview, click on the Web Page Test tab

Speed Index: The average time it takes for visible parts of the page to be displayed (in milliseconds). Note that the repeat tends to be faster, this is due to the page being cached
CDN: Percentage of files that are on a content delivery network
Compress: The percentage of files that are compressed
GZip: Percentage of files that are GZip
Cache: The amount of files that have been stored for faster retrieval within the browser's cache

Image Optimization Chart: Offers a visual of what images may need to be reformatted or compressed to improve performance
Connection View: This chart gives information on the connection status (DNS lookup, SSL negotiation) as well as the type of resource requested (image, html, etc.)
Waterfall: The Waterfall shows similar information as the Connection View but goes a bit more in-depth. It can offer a view of any hiccups on the site and can potentially help when troubleshooting slow site speed among other issues