The dramatic increase and impact of psychological research conducted via the internet is widely spotlighted, but objective assessments of the matter are scarce. In the present paper, we analyzed trends based on online and offline (in-laboratory) sample sizes in randomly sampled articles (N = 1,000) published in five general and experimental psychology journals in each year from 2003 to 2022. While our samples included no online participants at all in the early 2000s, in recent years’ publications we indeed found soaring online sample sizes (per article as well as per study), with online participants accounting for almost two thirds of all participants. At the same time, offline sample sizes increased only slightly, and comparatively negligibly. The generally increased sample sizes likely bode well for replicability and robustness, but the potential pitfalls of this rapid migration to online research warrant thoughtful and thorough further examinations.