Many people have asked whether JPEG and JPG are separate formats, this is very common. This is one of the most popular queries in photo editing, and the explanation is simple: JPEG and JPG are exactly the same file type.
The difference is the suffix — a short remnant of old Windows versions that could not handle longer suffixes. Even so, there are still situations when it helps to rename or convert images from .jpeg to .jpg.
JPEG is short for Joint Photographic Experts Group, the organization that created the compression method in 1992. Legacy versions of Windows needed file extensions to be no longer than 3 characters, which is why the extension is known as JPG.
Nowadays, .jpg and .jpeg are supported by every operating system, browser and application. Whether website a image is stored as image.jpg or image.jpeg, it opens the same way.
Even though they are the same file type, some older systems require .jpg files and can reject .jpeg files because of the file extension. In these cases, converting the extension from .jpeg to .jpg is sufficient.
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