The string is a specific technical identifier most commonly recognized as a Profile ID for an ICC (International Color Consortium) Profile . Specifically, it is associated with the uRGB color space , a variant of the standard sRGB space often used in digital imaging and mobile displays.

The identifier 9d91003d4080b03d40742c819ea5228e represents the uRGB ICC color profile, a public domain, perceptually rendered profile associated with Microsoft. It is frequently identified in image metadata analysis using tools like ExifTool to determine if different images were created using the same device or software configuration. Learn more about identifying this color profile in technical discussions at ExifTool Forum How to tell if same device was used for different images 11 Jan 2024 —

The string is the Profile ID for the uRGB color profile . This identifier is used in digital image metadata, specifically within ICC (International Color Consortium) profiles , to define how colors should be rendered on a screen or printer. Key Features of this Profile ID: