These two formats are identical file formats. There is absolutely no distinction between a .jpg photo and a .jpeg image — both formats apply the identical JPEG compression standard and save photos in the identical manner.
The only difference is entirely in the extension, which is a historical artifact from early computing. JPEG was introduced in 1992 by the Joint Photographic Experts Group. The Windows operating system launched Windows in the early era, the operating system had a constraint: extensions were limited to 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 when a system may specifically require the .jpeg file type. In these cases, converting from more info .jpg to .jpeg is sufficient.
No actual data conversion is required — only renaming the extension solves the compatibility concern in most cases.
Use alljpgconverters.com providing completely free web-based JPG to JPEG converter requiring no software needed.