For the convenience of the task, first create a copy of the application shortcut on the desktop and give it a suitable name. For example:
firefox.exe - DevTools
After that, open label properties. To do this, right-click on it and select “Properties”.
In the tab “Label” and fields “Object” at the end add a space and the key “
-- devtools“. It should turn out like on the screen. Then press the buttons “Apply” and “OK”.
After the above steps, launch the browser using this shortcut. After launch, the developer tools will automatically open.