PayPal is the more common of the two in our index: it runs on 1,467 websites against 179 for Google Pay, and 148 sites use both. Counts come from real scans, not vendor claims.
Google Pay is a digital wallet platform and online payment system developed by Google to power in-app and tap-to-pay purchases on mobile devices, enabling users to make payments with Android phones, tablets or watches.
PayPal is an online payments system that supports online money transfers and serves as an electronic alternative to traditional paper methods like checks and money orders.
148 sites run both Google Pay and PayPal. That is 83% of the sites using Google Pay, the smaller of the two.
Want to know which one a particular site uses? Look it up and see its whole stack, or compare two sites side by side.