Have you ever downloaded an photo from the internet and noticed it downloaded with a .jfif suffix rather than the standard .jpg, this is common. JFIF — which stands for JPEG File Interchange Format — is a specification that defines how JPEG image data is saved.
Essentially, a JFIF file is a JPEG photo. The .jfif extension shows up mostly when saving photos from specific browsers, particularly when files are was served lacking a defined MIME type.
The .jfif extension appeared to most people because some web browsers — especially previous versions of Microsoft Edge — save JPEG photos 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 produce a properly labelled JPG file. In both cases, the picture quality remains unchanged.
The easiest method is a file extension change. For Windows users, turn on file extension display in File Explorer, click the .jfif image, select Rename and update the extension to .jpg.
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