If you're using JavaScript to add the pixel code, why not also include other metrics you can get easily with JS like screen resolution?
Yeah, good question. I wanted to do that, but GoAccess is a web server log parser and doesn't support custom fields (you don't get screen resolution via web logs, so it kinda makes sense). See: https://goaccess.io/man I could probably hack it and overload different HTTP status codes to mean different screen sizes or something, but I didn't consider device size to be important for me. GoAccess does break down the User…
Can you give a screenshot? These stats look way off to what I'm used to.