: The file format is JPEG , which is a widely used lossy compression format ideal for balancing image quality and file size. Technical Review

: JPEG is the most efficient format for photographs because it can be compressed significantly while maintaining acceptable visual quality, making it easy to store or share.

: Using timestamps in filenames is highly effective for digital organization, as it prevents duplicate names and allows for automatic sorting by "Date Created" across different operating systems. HTML image embed element - MDN Web Docs

The filename follows a standard naming convention used by many Android smartphones to organize files chronologically. IMG : Indicates the file is a standard image.