The aim of this poster is to present conducted comparison study of eye-tracking systems. One of the systems was integrated into the Labvanced platform for online experiments and the second one was a “gold standard” lab-based eye-tracker (Eyelink 1000 - SR Research). We simultaneously recorded data with both eye trackers in five different tasks. These tasks were a subset of a standardized test battery for eye trackers, including a large grid task, smooth pursuit eye movements, viewing natural images, and two head movement tasks (roll, yaw). The results show that the webcam-based system achieved an overall accuracy of 1.4°, and a precision of 1.1° (between subjects), an error of about 0.5° larger than the Eyelink system. Interestingly, both accuracy (1.3°) and precision (0.9°) were slightly improved by presenting targets centrally on the screen, the region of interest in many psychophysical experiments. Remarkably, the correlation of raw gaze samples between Eyelink and webcam-based was at about 90% for both free viewing and smooth pursuit. Overall, these results put the performance of the 1 webcam-based system roughly on par with mobile eye-tracking devices (Ehinger et al., 2019; Tonsen et al., 2020) and demonstrate substantial improvement compared to existing webcam eye-tracking solutions (Papoutsaki et al., 2017). Given these findings and the fact that a large proportion of eye-tracking research uses such stimuli/area-of-interest sizes, we conclude that the presented webcam-based system can support a considerable fraction of eye-tracking research performed today.