Have you ever stored an photo from the online and found it saved with a .jfif suffix instead of the usual .jpg, this happens often. JFIF — which stands for JPEG File Interchange Format — is a specification which defines how JPEG image data is saved.
Essentially, a JFIF photo is a JPEG image. The .jfif extension shows up mainly while saving files from certain browsers, especially if the image comes with no a proper content-type header.
The .jfif extension became visible to regular users since some web browsers — especially legacy versions of certain browsers — download JPEG files with the correct .jfif file extension if the server fails to specify the file name.
Fixing this is straightforward: just rename the extension from .jfif to .jpg, or use a online converter to create a properly labelled JPG file. In both cases, the photo content stays the same.
The quickest fix is a file extension change. On Windows, enable showing file extensions in File Explorer, more info right-click the .jfif image, choose Rename and update the extension to .jpg.
Use alljpgconverters.com offering a completely free web-based JFIF to JPG tool without software necessary.