Many users have stored an image from the internet and found it downloaded with a .jfif extension instead of the standard .jpg, you are not alone. JFIF — meaning JPEG File Interchange Format — is a format which defines the way JPEG images is stored.
In practical terms, a JFIF file is a JPEG photo. The .jfif file type shows up primarily when saving files from specific browsers, especially if the image was served without a proper file type header.
This file extension became visible to everyday users as some web browsers — particularly previous versions of certain browsers — store JPEG images with the proper .jfif extension when the server omits the file name.
The fix is simple: just rename the file extension from .jfif to .jpg, or run it through a online converter to produce a standard JPG image. In both cases, the picture quality does not change.
The quickest fix is a simple rename. For Windows users, turn on file extension visibility in File Explorer, click the .jfif file, choose Rename and modify the extension to .jpg.
Use alljpgconverters.com providing completely free web-based JFIF to JPG converter website requiring no software needed.