1_125.jpeg
: In many content management systems (CMS), "1_125" might be a database ID where "1" is a category or user ID and "125" is the specific image ID.
: A number in parentheses or an underscore followed by a number often indicates a duplicate file that was renamed to avoid overwriting an original file with the same name. 1_125.jpeg
The (or .jpg) extension indicates that the file uses a "lossy" compression method developed by the Joint Photographic Experts Group . : In many content management systems (CMS), "1_125"
If this file appeared in a downloaded folder (such as from Google Takeout or a backup): If this file appeared in a downloaded folder
: It is the most common format for digital photos because it balances high visual quality with small file sizes.
: Some cameras or automated processing scripts rename files based on their metadata (EXIF data) to help photographers sort images by settings. 2. Standard JPEG File Format
