It seems that .jpe and .jpg files are often JPEGs pictures, just with different file extension. If that is the case, you can simply rename the ending from jpe to jpg to associate it with more programs in Windows. Some graphics programs recognize JPEG images regardless of their actual file extension.
Convert JPEG bitmap image format file to JPEG bitmap image format.
We found 2 software records in the database related to .jpe to .jpg file format conversion.
Microsoft Windows software - convert jpe to jpg on Windows
A complete image retouching program
Convert from jpe file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned jpe to jpg. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Multiplatform software - convert jpe to jpg on any platform
A popular utility for viewing and converting graphic files