Many users have saved an photo from the web and discovered it saved with a .jfif file extension rather than the usual .jpg, this is common. JFIF — short for JPEG File Interchange Format — is a standard that defines how JPEG image data is encoded.
Essentially, a JFIF photo is a JPEG file. The .jfif suffix appears mostly while saving photos from some web browsers, especially when the image was served with no a defined file type header.
The .jfif extension became visible to most people since some browsers — mainly previous versions of Internet Explorer — save JPEG files with the correct .jfif extension when websites fails to specify the filename.
The fix is simple: simply rename the file extension from .jfif to .jpg, or process it with a online converter to produce a correctly named JPG file. In each case, the picture quality does not change.
The quickest fix is a direct file rename. For Windows users, enable file extension visibility in File Explorer, click the .jfif image, select Rename and modify the extension here to .jpg.
Use alljpgconverters.com providing completely free web-based JFIF to JPG converter without software needed.