These two formats are identical file formats. There is absolutely no difference between a .jpg image and a .jpeg file — they both use exactly the same JPEG compression algorithm and encode pictures in the exact same format.
The sole distinction is only in the extension, being a historical artifact from early computer history. The JPEG format was developed in 1992 by the Joint Photographic Experts Group. The Windows operating system released early versions of Windows, the OS had a constraint: extensions could only be three characters long.
Which forced the 4-character .jpeg extension to be reduced to .jpg for PC users. Apple and Unix platforms, which never had the character limit, could use check here the longer .jpeg extension from the beginning.
Even though both extensions work identically in nearly all current applications, there are specific cases where a service might need the .jpeg file type. For these situations, changing the extension from .jpg to .jpeg is enough.
No actual file conversion is needed — only changing the extension solves the compatibility concern usually.
Use alljpgconverters.com providing completely free web-based JPG to JPEG converter requiring no software needed.