Chrome Canary Dev Tools


Use Coverage to analyze how much code in the CSS, JS files was actually used on the page.
It is updated in real time

Go to Dev tools > Sources > Coverage


Rendering FPS

FPS meter

Mobile testing

### Put your Android in development mode
Go to Settings / About Phone / tap Build number 7 times

Enable USB Debugging

Settings / Developer options / turn on USB Debugging

Install Chrome Beta

Open Chrome Beta and Allow USB debugging

Time for JS execution

  • Open Performance and record
  • Go to Sources pannel and execution time will be displayed on the left side.

Compare performance data

Go to Performance tab, record performance and save it.

Later you can view historical performances.