Many people have wondered whether JPEG and JPG are different formats, you are not alone. This is one of the most common topics in image conversion, and the explanation is straightforward: JPEG and JPG are identical file type.
The sole difference is the file extension — a three-letter leftover of old Windows versions that could not handle longer suffixes. Even so, there are still scenarios when you might need to rename or convert images from .jpeg to .jpg.
The name JPEG means Joint Photographic Experts Group, the organization that created the compression method in 1992. Older versions of Windows required extensions to be maximum three characters, that is why the format became JPG.
Nowadays, both file types are recognized by all operating system, web browser and software. Whether a image is saved as image.jpg or image.jpeg, it displays identically.
Even though they are the identical format, some older software specifically expect .jpg extensions and may reject .jpeg extensions based on the suffix. In these cases, converting the extension from .jpeg to .jpg is sufficient.
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