If you have ever saved an picture from the web and noticed it downloaded with a .jfif suffix instead of the usual .jpg, this happens often. JFIF — which stands for JPEG File Interchange Format — is a format that defines how JPEG photos is encoded.
In practical terms, a JFIF image is a JPEG photo. The .jfif extension appears mainly while saving files from certain browsers, especially when files are was served without a defined file type header.
JFIF files started showing to everyday users because some browsers — especially legacy versions of Internet Explorer — download JPEG files with the proper .jfif file extension when websites omits the download name.
The fix is simple: either rename the extension from .jfif to .jpg, or process it with a conversion tool to generate a standard JPG photo. In each case, the picture quality remains unchanged.
The easiest method is a simple rename. On Windows, enable file extension visibility in File Explorer, right-click the .jfif image, choose Rename and update the extension to .jpg.
Use get more info alljpgconverters.com offering a completely free browser-based JFIF to JPG solution without software necessary.