If you are using a PC Windows computer and you are trying to download JPEG images, you may notice the file extension is JFIF. This is a setting on your computer and browser that you will need to update in order to download JPEG files.
Below are some helpful links in how to do this:
Think Mutoh Instructions
LinkedIn Article Instructions
The Windows Club Instructions
You can also try to update the file extension from JFIF to JPEG.