JFIF to JPG

Turn .jfif pictures saved from the browser into ordinary .jpg files without losing a single pixel, right in your browser tab.

Drop your files here

.jfif, .jfi, .jif · up to 100 MB

Choose files

How to Convert to JPG

1
Drop your JFIF files
Add one picture or up to 100 at once. The format is read from the file itself, so a .jfif that is really a WebP or a PNG is still handled correctly.
2
Keep as is or re-encode
Keep as is is the default: the image data is not touched and only the extension changes. Re-encode if you also want a lighter file and pick the quality.
3
Download the JPGs
One file downloads on its own; several come back as a single ZIP with the same names ending in .jpg.

JFIF is already a JPG — only the name is different

JFIF stands for JPEG File Interchange Format. It is the standard wrapper that almost every JPEG photo has used since the early nineties: the same compressed image data with a small header in front. A .jfif file and a .jpg file are therefore the same thing inside. The extension shows up because Windows maps the image/jpeg type to .jfif on many systems, and Chrome and Edge follow that mapping when you save a picture from a web page. The trouble is that plenty of upload forms, office programs and online services only accept .jpg or .jpeg and reject the file because of its name. That is why the default mode here does not decode anything: it writes the very same bytes under a .jpg name, so the result is identical to the original and arrives instantly, even for a whole folder.

When re-encoding makes sense

Re-encoding decodes the picture and compresses it again, which always costs a little detail, so it is off by default. It is useful when the saved image is large and the form you are filling in has a size limit: quality 80 to 90 usually shrinks a photo noticeably while staying visually clean. If the file carries an orientation tag from a phone camera, the rotation is applied to the pixels before saving, so the picture never ends up sideways. When a .jfif turns out to hold a PNG or WebP, it is always converted to real JPEG data, and any transparent areas are filled with white.

Your pictures stay on your device

Renaming, decoding and encoding all happen inside this browser tab. Nothing is uploaded, there is no server queue, and closing the tab clears the files from memory, so personal photos and screenshots never leave your computer or phone.

Frequently asked questions

What is a JFIF file?

It is a JPEG image. JFIF is the file format most JPEG pictures have always been stored in, so a .jfif file opens and behaves exactly like a .jpg once the extension is changed.

Why does my browser save images as .jfif?

On many Windows computers the system registry links the image/jpeg type to the .jfif extension, and Chrome and Edge take the extension from there when you choose Save image as. The picture itself is a normal JPEG.

Does converting JFIF to JPG reduce quality?

Not in the default mode. Keep as is copies the image data byte for byte and only changes the name, so the JPG is identical to the original. Quality changes only if you choose Re-encode.

Can I just rename the file myself?

Yes, renaming .jfif to .jpg in your file manager gives the same result as the default mode. This tool is handy when hidden extensions make renaming awkward, on a phone, or when you have dozens of files at once.

How many files can I convert at once?

Up to 100 files in one batch and 500 MB in total. Several results come back as one ZIP named pulsarkit-jfif-to-jpg.zip, and a file that fails does not stop the rest.