JPEG and JPG are exactly the same image formats. There is absolutely no difference between a .jpg image and a .jpeg image — both formats use exactly the same JPEG compression algorithm and store image data in the same way.
The difference is only in the suffix, as it is a legacy issue from the early days of computing. JPEG was created in 1992 by the Joint Photographic Experts Group. When Microsoft introduced early versions of Windows, the OS imposed a limitation: extensions were limited get more info to be 3 characters.
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. For these situations, changing the extension from .jpg to .jpeg is enough.
No actual file conversion is needed — only changing the extension solves the compatibility concern in most cases.
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