Many people have questioned whether JPEG and JPG are distinct file types, you are not alone. This is one of the most common topics in digital imaging, and the response is simple: JPEG and JPG are exactly the same format.
The only difference is the extension — a 3-character remnant of legacy Windows operating systems which could not support longer file extensions. Even so, there are still situations where it helps to change files from .jpeg to .jpg.
The name JPEG means Joint Photographic Experts Group, the committee responsible for the compression method in 1992. Legacy versions of Windows required extensions to be maximum three characters, that is why the extension was shortened to JPG.
Today, both extensions are accepted by any platform, web browser and application. No matter if a image is stored as image.jpg or image.jpeg, check here it will open exactly the same.
Despite being the same file type, certain legacy platforms require .jpg extensions and may reject .jpeg files due to the suffix. For these situations, changing the file extension from .jpeg to .jpg is enough.
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