Convert JFIF to PNG without uploading
Drop your JFIF files below. You get PNG back in seconds. No upload, no queue, no limits, no watermark.
Drop images here or click to browse
HEIC · JPG · PNG · WebP · GIF · BMP. Nothing is uploaded.
Output:PNG · need another format?
Why convert JFIF to PNG?
JFIF is ordinary JPEG wearing an unfamiliar file extension — Windows sometimes saves web images this way, and then upload forms and editors refuse the .jfif name. PNG keeps every pixel intact and supports transparency, ideal for graphics and editing.
When you actually need this
When the awkward .jfif file also needs to become lossless for editing, or when the tool you are feeding it to accepts only PNG.
What it costs you
PNG cannot recover what JPEG already discarded, and the file gets much larger — 33 KB to 304 KB in our test, roughly nine times. You are getting a lossless copy of a lossy image.
What happens to the file size
On this site's own 800×600 test image, 33 KB of JFIF became 304 KB of PNG. That is 9.1× the original. Worth it when you need what PNG gives you, wasteful when you do not.
How it works
Drop your JFIF files above and pick a quality. Each one is decoded to raw pixels in a background thread, re-encoded as PNG, and handed straight back to you — individually or as a ZIP. Nothing queues, because nothing leaves.
Frequently asked questions
Should I convert to JPG or PNG?
JPG if you just need the file to be accepted somewhere, since it stays small and the data is already JPEG anyway. PNG if the image is going into an editor and will be saved repeatedly, because further edits will not degrade it.
Is it really private? Where do my JFIF files go?
Nowhere. The JFIF is decoded and re-encoded as PNG by your own browser, using WebAssembly — the same technology behind Photopea and Google's Squoosh. Load this page, switch off your internet, and the conversion still works. There is no upload step to opt out of, because there is no server to upload to.
Is there a file size or daily limit?
No. Your device does the work, so there is no bill for us to protect. The practical ceiling is your own memory: a batch of JFIF files converts fine, but very large images on an older phone can run out of room, and the tool will say so rather than fail silently.
Is QuietPix free?
Yes. Free for personal and commercial use, supported by small ads placed outside the tool itself. No account, no trial, no watermark on anything you convert.