JPG and JPEG are the same photo formats. No distinction between a .jpg photo and a .jpeg photo — both employ the very same JPEG encoding method and save photos in the identical manner.
The only difference is entirely in the extension, which is a historical artifact from early computing. The JPEG format was introduced in 1992 by the Joint Photographic Experts Group. The Windows operating system launched Windows in the early era, the operating system enforced a constraint: file extensions could only be three characters long.
Which forced the 4-character .jpeg extension to be shortened to .jpg for Windows computers. Non-Windows systems, without this extension limitation, used the full .jpeg file 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. In these cases, renaming the file from .jpg website to .jpeg is all that is needed.
No image data conversion is necessary — just updating the file extension resolves the problem almost always.
Try alljpgconverters.com offering a totally free online JPG to JPEG solution with no download required.