To change the file type of an image from ColdFusion to JPEG, you can use the built-in image processing functions of ColdFusion. Here are the steps to do this:

1. First, you need to read the ColdFusion image using the <cfimage> tag, as shown below:
2.  

<cfimage action="read" source="path/to/coldfusion/image" name="myImage">

Replace "path/to/coldfusion/image" with the actual path to your ColdFusion image.

1. Next, you need to convert the ColdFusion image to JPEG format using the write action of the <cfimage> tag, as shown below:

<cfimage action="write" destination="path/to/output/image.jpg" source="#myImage#" overwrite="true" format="jpg">

Replace "path/to/output/image.jpg" with the desired path and filename for the output JPEG image.

The overwrite attribute is optional and is used to determine whether to overwrite the output file if it already exists.

Finally, the format attribute is set to "jpg" to indicate that the output format should be JPEG.

This will convert the ColdFusion image to a JPEG image and save it to the specified location.