Rapid automatized naming (RAN) is a powerful predictor of reading fluency, and many digitized dyslexia screeners include RAN as an essential component. However, the validity of digitized RAN has not been established. Using a sample of 174 second-graders, this study tested (1) the comparability between paper and digitized versions of RAN and (2) the validity of the digitized version. We found that paper and digital versions were highly correlated, and such correlation was consistent across students' reading levels. Further, the digital RAN predicted children's word reading proficiency as well as the paper version. Moreover, the constructs measured by paper and digital versions of RAN were comparable. We conclude that the digitized RAN is a valid alternative to the traditional paper version for this age group.