Change Icon Size Android Application. Android launcher icon name and location. The default icon is of same name, same size and format can also be changed.
Required launch icon and splash image size You can change the app’s name as well if you want. If you want to snap a new photo to use as an icon, tap the camera icon instead, then snap a photo.
Tap change to assign a different icon—either an existing icon or an image—and tap ok to finish.
Changing the application icon in android studio: Now, your android icon is this icon. 512px by 512px, maximum file size: Icon can be chosen from gallery and lots of icon packs.