I've been spending some time lately in the reporting and analysis of web application speed. Here's a few screenshots the PageSpeed Insights from my own website, for inspiration.

This was completely free, with under 20 minutes of configuration.

PageSpeed Insights for edfig.me

https://edfig.me gets an overall score of 89. I built this blog for easy-updates/content management. I haven't spent any time on site optimization--so I'm pretty happy with that for now.

Lab Data Measurements

Opportunities

Serve Images in Next-Gen Format

Properly Size Images

Diagnostics

Avoid enormous network payloads

It tells you exactly which assets are the culprit. Neat!

Avoid chaining critical requests / keep request counts low and transfer sizes small

Other checks (incomplete list)

Lab data from my other older/slower website:

This entire diagnostic happens automatically! Impressive.

✌🏻