Why Do Images Save as JFIF? How to Get JPG Files Again

If pictures you save from Chrome or Edge end up as .jfif files instead of .jpg, the website is not to blame — a Windows setting is. The good news: a JFIF file is an ordinary JPEG, so getting a .jpg back costs no quality at all.

Open the JFIF to JPG tool → Free, nothing is uploaded

What is a JFIF file?

JFIF stands for JPEG File Interchange Format, one of the standard ways of packaging a JPEG image (cameras use a close relative called Exif). Many ordinary .jpg files are JFIF inside. So a .jfif file is not a different kind of picture: it is a JPEG with a less common extension, and it opens in every browser and in the Windows Photos app.

The trouble is the name. Many upload forms, online shops, government portals and older programs only accept files ending in .jpg or .jpeg, and reject .jfif even though the image inside is exactly what they want.

Why Windows saves pictures as .jfif

When you save an image, the browser asks Windows which extension belongs to its type, image/jpeg. Windows keeps the answer in the registry, under HKEY_CLASSES_ROOT\MIME\Database\Content Type\image/jpeg, in a value called Extension. On many PCs that value has been changed to .jfif — often by a program installed or updated along the way — and from then on Chrome, Edge and other browsers save JPEG images as .jfif.

Fix the files you already have

1. Open the JFIF to JPG converter.
2. Drop your .jfif files onto the page — a whole batch at once is fine.
3. Each file is saved as .jpg right away. The image data is copied byte for byte, so nothing is lost; the GPS location, if there is one, is removed unless you choose to keep it.

Prefer to do it by hand? In File Explorer turn on View → Show → File name extensions, then rename photo.jfif to photo.jpg and confirm the warning. Because the format is the same, the renamed file works everywhere.

Stop it for future downloads (registry fix)

To make Windows save JPEG images as .jpg again, set the registry value back:

1. Press Win + R, type regedit and press Enter.
2. Go to HKEY_CLASSES_ROOT\MIME\Database\Content Type\image/jpeg.
3. Double-click Extension and change .jfif to .jpg.
4. If there is also a key named image/pjpeg, change its Extension to .jpg as well.
5. Close the Registry Editor and restart your browser.

Change only these values: the registry controls how Windows works, and a wrong edit elsewhere can cause problems. If you would rather not touch it, simply convert the files after downloading.

Mac, iPhone and Android

macOS, iOS and Android rarely create .jfif files, but they receive them — by email, in chats or from a Windows PC. The converter works in Safari and Chrome on phones too, where renaming files is awkward.