In older versions of React Native, PNG downsampling was disabled since it was an experimental feature in Fresco. It looks like they have enabled it in the latest versions of React Native.
React Native Android depends on Fresco for loading and displaying images. Currently we have disabled downsampling because it is experimental, so you may run into memory issues when loading large PNG images.
Source : facebook.github.io/react-native/releases/0.27/doc…