development <<< publish play console

png
512 512 ... high resolution, play store search page result logo
jpg
1280 720 ... mobile screenshot
1280 800 ... tablet screenshot
1024 500 ... big banner
180 120 ... ads banner

screenshots (W H) min side 320, max side 3800. Min number per device 2. Max number per device 8.

play console page https://play.google.com/store/apps/developer?id=llll