While the string 9d91003d4080b03d40742c819ea5228e appears to be a random sequence of characters, it is actually a specific ICC Profile ID associated with the uRGB (universal RGB) color space.
The profile defines exactly how red, green, and blue colors should be rendered: Red Matrix: 0.43604, 0.22244, 0.0139 Green Matrix: 0.3851, 0.71693, 0.09708 Blue Matrix: 0.14307, 0.06062, 0.71393 How to tell if same device was used for different images 9d91003d4080b03d40742c819ea5228e top
Unmasking the Hash: What 9d91003d4080b03d40742c819ea5228e top Taught Me About Process Monitoring 0.0139 Green Matrix: 0.3851
Cons: Because it is "uncalibrated," it provides less color accuracy than standardized profiles like sRGB or Adobe RGB, leading to slight variations in how an image looks between different monitors. 0.09708 Blue Matrix: 0.14307