Programs enabling conversion of the file:
If your objective is to convert the file from CR2 to the file JPEG, you can use any of the applications listed. CR2 to JPEG conversion process in every program intended for this purpose (so-called converters) is very intuitive and everyone is able to manage converting a file.
However, bear in mind that the list may also include programs to support and work with the indicated extensions CR2 and JPEG - and not only converters. In such a case, you need to open the source file CR2 and from the options available in the program, choose ”Save as... JPEG" or "Export to JPEG".