To fix a problem, you must understand its cause. A JPG file isn't just a picture; it is a complex sequence of headers, segments (markers), and compressed data streams. Corruption occurs when this sequence is disrupted.
Don't just drag-drop. Use or SyncBack to verify file integrity. These tools compare the checksum (MD5 hash) of the original and the copy. If the numbers don't match, the copy is corrupt. repair jpg files
: Sometimes simply changing the file name (while keeping the extension) can bypass minor file indexing issues Open in Different Apps : Try opening the file in or a web browser like Google Chrome To fix a problem, you must understand its cause