Photoshop, GIMP, and Paint can open, view, and convert JFIF files.
If you want to stop this from happening, you can modify your Windows registry: JFIF to JPG Converter - CloudConvert Download images jfif
A .jfif file is essentially a renamed .jpg. It contains the exact same data and compression as a standard JPEG, but the extension looks different. How to Open JFIF Files Photoshop, GIMP, and Paint can open, view, and
Use free services like FreeConvert.com or CloudConvert to upload and convert files. How to Open JFIF Files Use free services like FreeConvert
Open the JFIF file in Paint and use "Save as" to select JPEG. How to Fix the "Save as .jfif" Issue (Windows)
Windows Photos, macOS Preview, and web browsers (Chrome/Edge) can open JFIF files directly.
Certain Windows Creators Updates and browser updates in Chrome or Edge can default to saving JPEG images as .jfif .