JPEG and JPG are the same photo formats. 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 purely in the file extension, as it is a relic from the early days of computing. JPEG was created in 1992 by the Joint Photographic Experts Group. Early Windows introduced Windows in the early era, the system imposed a restriction: file extensions had to be 3 characters.
Causing the four-character .jpeg suffix to be abbreviated to .jpg for Windows users. Non-Windows systems, not having this three-character restriction, continued using the complete .jpeg extension from the outset.
Although both file types function the same in virtually all today's programs, some situations when a system requires the .jpeg extension. In these cases, converting from .jpg to .jpeg is all that is needed.
No image data conversion is more info necessary — just updating the file extension resolves the problem almost always.
Visit alljpgconverters.com for a totally free browser-based JPG to JPEG tool with no account necessary.