These two formats are identical file formats. There is absolutely no difference between a .jpg image and a .jpeg image — both formats apply the identical JPEG compression standard and save image data in the same way.
The difference is purely in the file extension, as it is a relic from the early days of computing. The JPEG format was developed in 1992 by the Joint Photographic Experts Group. When Microsoft released early versions of Windows, the OS imposed a limitation: extensions had to be 3 characters.
This forced the 4-character .jpeg suffix 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 function the same in nearly all current applications, there are specific scenarios in which a service might need the .jpeg extension. website When this happens, changing the extension from .jpg to .jpeg is enough.
No real file conversion is needed — simply changing the extension fixes the compatibility concern usually.
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