This command will change the size (scale) of your target (NPCs, objects, etc). Use 'player.setscale' to change your character's size.
setscale [scale] Target Command
| Scale | A number between 0.1 and 10. 1 is default. 0.5 is half size, 2 is two times as big. |
setscale 2
This command would make your target two times its usual size.
setscale 0.5
This command would make your target half its usual size.
player.setscale 0.5
The above console command would make your character half its usual size.