Automated Eye Tracking Data Quality Determination for Screen-Based Eye Trackers R package ETDQualitizer version 1.1.0 Compute common data quality metrics for accuracy, precision and data loss for screen-based eye trackers. The package supports gaze input in screen pixels or degrees and reports angular measures in degrees where appropriate. If you use this package, please cite Niehorster, D.C., Nyström, M., Hessels, R.S., Benjamins, J.S., Andersson, R., and Hooge, I.T.C. (2026). The fundamentals of eye tracking, Part 7: Determining data quality. Behavior Research Methods. <doi:10.3758/s13428-026-03039-4>. Software Imports: R6, stats Suggests: testthat (>= 3.0.0) Diederick Niehorster <diederick_c.niehorster@humlab.lu.se> Comprehensive R Archive Network (CRAN) Diederick Niehorster [aut, cre, cph] (ORCID: <https://orcid.org/0000-0002-4672-8756>) MIT + file LICENSE (https://CRAN.R-project.org/package=ETDQualitizer/LICENSE) 2026-06-08 application/tgz https://CRAN.R-project.org/package=ETDQualitizer doi:10.32614/CRAN.package.ETDQualitizer