JFIF to PNG Converter
Convert .jfif files (the JPEG variant Windows and KakaoTalk sometimes save) to PNG. Free, browser-based, no upload.
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What is a .jfif file?
JFIF (JPEG File Interchange Format) is the same image format as JPEG — the only difference is the file extension. Windows 10/11, the Edge browser, and some Asian messengers (notably KakaoTalk) sometimes save images with the .jfif extension instead of .jpg, which can confuse uploaders that filter on extension. Converting to PNG fixes that and gives you a lossless file that opens everywhere.
How to Use
- Drag and drop your .jfif files onto the upload area, or click to browse.
- Multiple files are supported for batch conversion.
- Click "Convert to PNG" to start.
- Download individual files or use "Download All".
FAQ
Why does my file have a .jfif extension?
It's a Windows behavior. When you save an image from Edge or some apps, Windows may apply the .jfif extension based on the JPEG file's internal header. The image data is identical to a .jpg.
Will I lose quality converting to PNG?
No. The conversion to PNG is lossless. The original JFIF was already JPEG-compressed, so you keep exactly what was in the source — just in a PNG container.
Are my files uploaded to a server?
No. Everything runs in your browser using HTML5 Canvas. Your files never leave your device.