JPEG and JPG are the same photo formats. There is no technical difference between a .jpg file and a .jpeg file — they both employ the very same JPEG compression algorithm and encode pictures in the exact same format.
The sole distinction is entirely in the extension, being a historical artifact from early computer history. The JPEG format was developed in 1992 by the Joint Photographic Experts Group. When Microsoft released early versions of Windows, the OS had a constraint: extensions more info were limited to be three characters long.
This forced the 4-character .jpeg extension to be shortened to .jpg for Windows computers. Non-Windows systems, without this extension limitation, used the full .jpeg file extension from the start.
While both file types work identically in nearly all current applications, there are specific scenarios in which a service might need the .jpeg extension. When this happens, renaming the file from .jpg to .jpeg is enough.
No real conversion of image data is needed — simply changing the extension fixes the compatibility concern usually.
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