No they&#x27;re not. As an example, bounces are commonly the last page where the user left without doing anything. How can you tell that from a simple server log line that says the page loaded? You cant see if they clicked on something or how long they read the page or what other actions they took.<p>Most sites today also go far beyond basic pageviews and track all kinds of events on the page like scrolling rates, reading time, what other headlines you clicked or hovered over, etc. This is not possible without JS tracking.