Difference between JPG and JPEG

[Wesley Vogel]

As far as Windows is concerned, .jfif, .jpe, .jpeg and .jpg are all the same
thing. jpegfile Class described as JPEG Image.

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Report Class Name
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File Extension .jfif
File Class pjpegfile
File Description JPEG Image

Files of .jfif will be listed in the File Types dialog box as JPEG Image.

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Report Class Name
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File Extension .jpe
File Class jpegfile
File Description JPEG Image

Files of .jpe will be listed in the File Types dialog box as JPEG Image.

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Report Class Name
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File Extension .jpeg
File Class jpegfile
File Description JPEG Image

Files of .jpeg will be listed in the File Types dialog box as JPEG Image.

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Report Class Name
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File Extension .jpg
File Class jpegfile
File Description JPEG Image

Files of .jpg will be listed in the File Types dialog box as JPEG Image.
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Use FileExtInfo.exe to view the association settings for all of those file
types and you'll see that they all have the same registry settings.

Except maybe...
HKEY_CURRENT_USER\Software\Microsoft\Windows\
CurrentVersion\Explorer\FileExts\.JPEG\OpenWithList

OpenWithList lists programs in Open With when you right click a file.

[[FileExtInfo utility is a small helper application that gathers information
about the association settings for a chosen file type. It exports all
possible registry locations that are associated with a particular file type.
The information (REG format) is consolidated and presented in a single text
file, to make troubleshooting easier.]]

FileExtInfo - View the association settings for a file type easily
http://windowsxp.mvps.org/fileextinfo.htm

FileExtInfo.zip
http://windowsxp.mvps.org/utils/fileextinfo.zip

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Hope this helps. Let us know.

Wes
MS-MVP Windows Shell/User

In