JFIF to PNG Converter
Convert JFIF images to lossless PNG. JFIF is just JPEG with a different extension — but many tools and portals reject the .jfif format. Convert to universal PNG in one click.
Drop JFIF here
JFIF files supported
What is a JFIF file? (And why is your browser saving images as .jfif?)
JFIF stands for JPEG File Interchange Format. It is a very early specification (1992) that defined how to store and exchange JPEG images — essentially, it is JPEG. Every JFIF file is a JPEG file. The image data, compression algorithm, and quality are all identical. The only difference is the file extension: .jfif instead of .jpg or .jpeg.
The reason so many users suddenly find themselves with .jfif files: Internet Explorer 11 and older Microsoft Edge saved JPEG images downloaded from websites using the .jfif extension, because the MIME type image/jpeg was mapped to .jfif in the Windows registry for IE. Millions of images were saved this way between 2014 and 2020 before Edge switched to Chromium.
When PNG is better than JFIF/JPG
Converting to PNG (rather than renaming to .jpg) makes sense in these scenarios:
- Editing in design tools — Figma, Canva, Affinity, and GIMP work better with PNG for graphics work
- Transparency needed — if the image will have its background removed, PNG supports alpha transparency; JPEG does not
- Further compression without quality loss — PNG can be losslessly compressed further; JPEG degrades with each save
- Text or UI screenshots — PNG stays sharp; JPEG blurs text and fine lines
JFIF vs PNG — key differences
JFIF/JPEG: lossy compression, small file size, no transparency, supported everywhere. Best for photos.
PNG: lossless, larger file size, supports transparency, excellent for graphics and screenshots. Best for images with text, logos, or where you need to preserve exact pixel values.
If you just need to use the JFIF in an app that requires .jpg, you can also use JFIF to JPG instead — same image data, just renamed to .jpg.
Frequently Asked Questions
Is JFIF the same as JPEG?
Yes. JFIF (JPEG File Interchange Format) is a subset of the JPEG standard. The image data is byte-for-byte identical to a JPEG — only the file extension differs.
Why does my computer save images as .jfif?
Internet Explorer 11 and older versions of Edge saved JPEG images with the .jfif extension. Some versions of Chrome on Windows also used .jfif. This was common between 2015–2020.
Why can't some apps open .jfif files?
Apps that check file extension instead of file content will reject .jfif. Photoshop, some government portals, and many older apps expect .jpg or .jpeg. Converting to PNG bypasses this entirely.
Will the PNG be larger than the JFIF file?
Yes. PNG is lossless and uncompressed relative to JPEG. A 500 KB JFIF file typically becomes 1–3 MB as PNG. If file size matters more than losslessness, convert to JPG instead using JFIF to JPG.
Is my file uploaded to a server?
No. Conversion runs entirely in your browser. Your JFIF file never leaves your device.