These two formats are identical file formats. There is absolutely no difference between a .jpg image and a .jpeg image — both formats apply the identical JPEG compression standard and save photos in the identical manner.
The only difference is purely in the file extension, which is a relic 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 three-character restriction, continued using the complete .jpeg extension from the outset.
Although both extensions perform equally in almost every modern software, certain cases where a service might need the .jpeg file type. For more info these situations, changing the extension from .jpg to .jpeg is enough.
No real conversion of image data is needed — simply changing the file extension resolves the issue almost always.
Visit alljpgconverters.com for a totally free browser-based JPG to JPEG solution with no download required.