JPG and JPEG are identical file formats. There is absolutely no distinction between a .jpg photo and a .jpeg photo — both formats apply the identical JPEG compression standard and save photos in the identical manner.
The only difference is entirely in the file extension, which is a relic from early computing. JPEG was introduced in 1992 by the Joint Photographic Experts Group. The Windows operating system launched Windows in the early era, the operating system had a constraint: extensions could only be three characters long.
Which forced the 4-character .jpeg extension to read more be reduced to .jpg for Windows computers. Apple and Unix platforms, which never had the 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 file extension fixes the issue usually.
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