Use JFIF to JPG - free
Frequently asked questions
Does this actually change the image data?
It re-encodes the image, but since JFIF is a form of JPEG, there is no meaningful quality difference - the main practical change is the file extension.
Why do I have a .jfif file in the first place?
Some browsers and devices save downloaded JPEG images with a .jfif extension instead of .jpg, which some upload forms then reject.
Can I convert multiple files at once?
Yes, drop multiple JFIF files and each is converted individually.