Free Online JFIF to PNG Converter
Turn a JFIF into a lossless PNG when you need a clean copy to edit.
Up to 50 MB per file. Sign up free to convert files up to 100 MB.
| File name | Size | Convert to |
|---|
Checking files and selected output formats.
JFIF to PNG: a real re-encode, unlike JFIF to JPG
The JFIF data is decoded to pixels and stored losslessly as PNG. Nothing more is discarded, but nothing is recovered either, the JPEG compression that was applied when the file was created is already in the pixels, so the PNG faithfully preserves those artifacts at several times the file size.
Convert when the image is going into editing where repeated saves would otherwise accumulate more JPEG loss. If you just need the extension fixed, convert to JPG instead, it costs nothing.
JFIF vs PNG: Side-by-side
Technical comparison of the two formats, useful for deciding which to use, or for confirming what changes during conversion.
| Property | JFIF | PNG |
|---|---|---|
| Full name | JPEG File Interchange Format | Portable Network Graphics |
| Year introduced | 1992 | 1996 |
| Developer / standard body | C-Cube Microsystems | PNG Development Group / W3C |
| MIME type | image/jpeg | image/png |
| File extension | .jfif / .jpg | .png |
| Compression | Lossy (DCT-based, same as JPEG) | Lossless (DEFLATE) |
| Color / data depth | 24-bit | 24-bit truecolor + 8-bit alpha |
| Max dimensions / size | 65,535 × 65,535 px | 2,147,483,647 × 2,147,483,647 px |
| Transparency | No | Yes |
| Animation | No | APNG extension only |
| Standard / specification | JFIF / ISO/IEC 10918 | W3C / ISO/IEC 15948 |
| Best for | A specific JPEG header variant, functionally identical to JPG for display | Logos, screenshots, graphics with transparency or sharp edges |