If you have ever asked if JPEG and JPG are separate file types, this is a frequent question. It is one of the most popular topics in digital imaging, and the response is clear: JPEG and JPG are the same image standard.
The difference is the suffix — a 3-character remnant of early Windows operating systems that could not handle longer suffixes. Even so, there are sometimes situations when it helps to change files from .jpeg to .jpg.
JPEG stands for Joint Photographic Experts Group, more info the group which developed the standard in 1992. Early versions of Windows enforced extensions to be no longer than 3 characters, that is why the format became JPG.
Nowadays, both file types are recognized by any OS, browser and program. Whether a image is named image.jpg or image.jpeg, it will open exactly the same.
Although they are the same format, certain legacy systems require .jpg files and can reject .jpeg files because of the file extension. In these cases, changing the extension from .jpeg to .jpg is sufficient.
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