Visitors without Javascript
Most trackers require Javscript to run, but our tracking code has an optional, image-based backup tracking method to track these visitors. We can't log a few data types without Javascript, such as referrer or screen resolution, but considering we can log these visitors at all is a major advantage over other services.
This backup tracking method is optional and
disabled by default, as many people put their tracking code inside the <head> tag, which doesn't allow images. To enable this backup tracking method, just check the "Track visitors that have Javascript disabled" box at the top of the
tracking code page, then copy/paste the new code it gives you. The image is inside a <noscript> tag, so it will only run when a visitor has disabled Javascript.