Get Performance Insights Using Web Profiler in Drupal 8

Web Profiler, which ships with Devel, adds a toolbar at the bottom of each page and gives you stats about your Drupal site. Out-of-the-box, you get the number of queries, how much memory was used and so much more.

Web Profiler Tool
Web Profiler toolbar default items.

Learn how to get the most out of it by watching the video above or head over to the link below.

Link: Debug Site Performance Using Web Profiler in Drupal 8