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 historical artifact 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 were limited to be three characters long.
Which forced the 4-character .jpeg extension to be reduced to .jpg for PC users. Apple and Unix platforms, which get more info never had the character limit, could use the longer .jpeg file extension from the beginning.
Even though both file types work identically in nearly all current applications, there are specific scenarios in which a platform requires the .jpeg extension. When this happens, renaming the file from .jpg to .jpeg is all that is needed.
No image data conversion is necessary — just updating the file extension resolves the problem in most cases.
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