Renderer is the internal tool that Nozzle uses to get all SERP, Result and DOM measurements. In the past, Renderer measurements were off by a pixel or two for each Result, meaning that Nozzle's Vision tool didn’t line up exactly with the actual SERP features. This error was primarily occurring in Desktop.
We’re excited to announce that we have updated the dependencies used for Renderer, so now even that small amount of error doesn’t exist and your experience with Nozzle Vision should be enhanced.