SmileNet is a novel smiling face detection framework that uses a Fully Convolutional Neural Network (FCNN) to detect multiple faces and recognize smiles in the wild. This framework is designed to be registration-free, meaning it does not require any prior knowledge of the face's location or orientation. The FCNN architecture allows for efficient and accurate detection of faces and smiles, making it a valuable tool for various applications such as security, marketing, and social media analysis.