Semrush offers two free SERP checkers that make SERP analysis easy (sign up for a free trial here). What Is SERP Analysis? But first, let’s start with the goals of SERP analysis. Here’s what the SERP Analysis widget looks like for “guitar strings.”This part of the report gives you a quick overview of your SERP competitors. Here’s what the SERP Analysis widget looks like for “how to fix broken guitar string.”Notice the difference?