Click the Spot Healing Brush tool in the Tools panel or just press the J key.
Click the Spot Healing Brush tool in the Tools panel or just press the J key. In the options bar, you can adjust the size and hardness of the brush edge (harder creates more clearly defined edges). Keep the type setting at Content-Aware, which means the tool will sample pixels and match the texture, lighting, transparency, and shading of the sampled pixels to the pixels being healed.