Profiling your site is extremely useful not only for debugging and performance testing but also for learning about how your site handles requests. Symfony 2 comes with a bundle (like a Drupal module but for Symfony) called WebProfiler Bundle which collects information about each request made to your application and allows you to visualize it in the browser. Drupal 8 doesn’t include the Web Profiler bundle in core. However, there already is a contrib module for it. Make sure to install any dependencies before enabling the module. The module will render a fixed bar at the bottom of each page for users with the View webprofiler toolbar permission. The bar provides a summary of the collected data from the profiler. By clicking on any of the items, you …

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Web Profiler in Drupal 8

Also published on Medium.