JPG and JPEG are identical file formats. There is absolutely no difference between a .jpg photo and a .jpeg image — both formats apply the identical JPEG compression standard and save image data in the same way.
The 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. When Microsoft introduced early versions of Windows, 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. Mac and Unix systems, not having this three-character restriction, continued using here the complete .jpeg extension from the start.
While both file types function the same in virtually all today's programs, some situations in which a platform requires the .jpeg extension. When this happens, renaming the file from .jpg to .jpeg is all that is needed.
No real conversion of image data is necessary — simply updating the file extension fixes the issue almost always.
Visit alljpgconverters.com for a 100 percent free web-based JPG to JPEG tool requiring no account necessary.