JPEG and JPG are exactly the same image formats. There is no technical difference between a .jpg image and a .jpeg image — they both use exactly the same 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 early computing. JPEG was created in 1992 by the Joint Photographic Experts Group. Early Windows launched Windows in the early era, the operating check here system enforced a restriction: file extensions could only be no more than 3 characters.
Which forced the four-character .jpeg extension to be reduced to .jpg for PC users. Apple and Unix platforms, which never had the character limit, could use the longer .jpeg file extension from the beginning.
Even though both extensions 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 updating the file extension fixes the issue usually.
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