This signifies the Joint Photographic Experts Group format, which is the world's most widely used compressed image format . Characteristics of JPEG Files
An informative look at the JPEG standard reveals why your device likely chose this format: IMG_20230111_002510.jpg
The numerical sequence "20230111" indicates the date (YYYYMMDD), while "002510" typically represents the time (HHMMSS) the photo was saved. This signifies the Joint Photographic Experts Group format,
JPEGs use lossy compression to reduce file size, making them easy to store and share without losing significant visible detail. IMG_20230111_002510.jpg
A common default prefix used by digital cameras and smartphones to denote an image file.