Convert JFIF to PNG

A JFIF is a JPEG wearing an unfamiliar name — Windows hands them out for some saved images, and upload forms that filter by extension refuse them. Converting to PNG solves the name problem and changes the format for real: from here on the file is lossless, so nothing further degrades no matter how many times it is edited and saved.

  1. Your JFIF files

    Drop your JFIF files here

    JFIFPNGJPGWebP

    Your files are never uploaded.

  2. What you want back

  3. Your files

How to convert JFIF to PNG

  1. Add your JFIF files

    One or many. They are read by your browser and never uploaded.

  2. Leave it on PNG

    A real conversion, lossless from here. JPG is one click away and is a pure rename — see the FAQ.

  3. Save the PNGs

    Individually, or the whole batch as a zip.

What you get

A format nothing refuses, in a lossless box

PNG is accepted by every form, editor and viewer, and once the image is in it, repeated editing and saving costs nothing further. For a screenshot or a diagram that will be annotated, that is the right home.

Nothing further is discarded

The JPEG compression your image already carries is baked in — no format can undo it — but PNG adds none of its own. What you see at conversion is what you keep, through every save after.

The honest alternative is one click away

If all you need is the upload form to accept the file, JPG is the better answer — on this page it is a byte-identical rename with zero quality cost, and a far smaller file than the PNG will be.

Photos stay on your machine

Decode and encode both happen in this page. No upload, no server, no copy you cannot see.

Questions about JFIF and PNG

Should I pick PNG or JPG for my JFIF?
If the goal is just a name that upload forms accept, pick JPG: on this page that is a byte-for-byte copy with a new extension, zero loss, small file. Pick PNG when the image is going to be edited repeatedly, or when a form specifically demands PNG — that is when the lossless-from-here property earns its larger file.
Will PNG make the photo look better?
No. The JPEG compression already in the image is permanent; PNG faithfully preserves it, artefacts and all, in a bigger file. What PNG buys is the future: no further loss from here, however many times you save.
Why is the PNG so much bigger?
PNG stores the pixels exactly, and photographs have a lot of pixel variety to store — three to five times the JPEG's size is normal. For graphics with flat colours the gap shrinks. If size matters more than exactness, WebP on this page is the middle ground.
What is a JFIF in the first place?
The JPEG File Interchange Format — the standard wrapper JPEG images have shipped in since 1992. Most .jpg files on the web are JFIFs under a friendlier name; Windows just sometimes names the extension literally. The format is not odd, only the name is.
Is it free, and is my file uploaded?
Free, no account, no limit. Everything runs in your browser. Your files are never uploaded.

If the result needs to fit under an upload limit, resize it to a size in KB. Photos from an iPhone rather than the web? That is HEIC to JPG. Or see the rest of the image tools.