Launch DevTools from the toolbar/menu

Once an app is running,
you can start DevTools using one of the following:

Select the Open DevTools toolbar action in the Run view.

Select the Open DevTools toolbar action in the Debug view.
(if debugging)

Select the Open DevTools action from the More Actions
menu in the Flutter Inspector view.

Launch DevTools from an action

You can also open DevTools from an IntelliJ action.
Open the Find Action… dialog
(on a Mac, press Command+Shift+A), and search for the
Open DevTools action. When you select that action,
DevTools is installed (if it isn’t already), the DevTools server
launches, and a browser instance opens pointing to the DevTools app.