I have used a lot of different search engine optimization (SEO) audit tools over the past two decades. That includes enterprise solutions like BrightEdge and Conductor to lifetime deals like like Ispionage, Serpstat, and Screpy. Hands down, the best tool I have used and continue using is the audit tool within the Semrush platform. The following image by itself shows you how many things it is checking for which laps any competing solution. I also listed these items alphabetically below the image so you can more easily see and compare them to what you are using today. I find it