These two formats are the same file formats. No distinction between a .jpg file and a .jpeg file — they both use the very same JPEG compression algorithm and store image data in the same way.
The sole distinction is only in the suffix, being a legacy issue from early computer history. The JPEG format was developed in 1992 by the Joint Photographic Experts Group. When Microsoft released early versions of Windows, the OS had a limitation: extensions were limited to be 3 characters.
This forced the 4-character .jpeg extension to be shortened to .jpg for Windows computers. Apple and Unix platforms, 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. When this happens, changing the extension from .jpg to .jpeg is enough.
No real conversion of image data is needed — simply check here changing the extension fixes the compatibility concern usually.
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