This is the 15017th most frequent German word.
schüttelt
"Schüttelt" means "shakes."
The verb 'schüttelt' is used to describe the physical action of shaking oneself.
Der Hund schüttelt sich nach dem Schwimmen, um trocken zu werden.
The dog shakes itself after swimming to get dry.
The verb 'schüttelt' here illustrates the gesture of head shaking as a form of expression.
Sie schüttelt den Kopf, um ihre Ablehnung auszudrücken.
She shakes her head to show her disapproval.
In this case, it describes the rapid movement of the picture to speed up the development process.