Have you ever saved an picture from the internet and discovered it appeared with a .jfif file extension rather than the standard .jpg, this happens often. JFIF — which stands for JPEG File Interchange Format — is a specification which defines the way JPEG image data is saved.
Essentially, a JFIF file is a JPEG file. The .jfif suffix occurs primarily when saving photos from specific browsers, particularly when files are comes without a proper file type header.
JFIF files became visible to most people because some browsers — particularly previous versions of Microsoft Edge — save JPEG files with the correct .jfif file extension when websites does not specify the filename.
The solution is easy: just rename the extension from .jfif to .jpg, or process it with a converter tool to create a correctly named JPG file. Either way, the picture quality stays the same.
The simplest approach is a file extension more info change. For Windows users, turn on showing file extensions in File Explorer, click the .jfif file, select Rename and modify the file extension to .jpg.
Try alljpgconverters.com for a totally free web-based JFIF to JPG tool with no software needed.