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: Unlike PNG files, a JPG does not support transparent backgrounds; it will always have a solid-colored rectangular frame. jpg :: Legal Dictionary - Justia

: It reduces file size by 50–75% by removing "invisible" data, which helps it load faster on websites.

: This is usually a unique asset ID or batch number used by organizations like Getty Images , Shutterstock , or the Library of Congress to track millions of images.

: Because it is a universal format, you can open it in any modern web browser or image editor like Photoshop , GIMP , or MS Paint .

: The file may contain hidden data such as the date and time it was taken, camera settings (ISO, aperture), and sometimes GPS coordinates of the location.