JPGJFIF
JPG to JFIF Converter
Convert JPG images to JFIF in seconds. Your files are processed locally in your browser — nothing is uploaded.
Processed locally in your browser
Why convert JPG to JFIF?
JPG is everywhere, but it cannot store transparency and its compression is decades old. Some systems explicitly expect the .jfif extension; the content is a standard JPEG image.
What changes when you convert JPG to JFIF
- File sizes are usually similar; the exact result depends on the quality setting.
- JPG and JFIF use the same compression. The conversion mainly changes the file extension and header; choose a high quality to avoid visible re-compression.
- JFIF images can be at most 65,535 pixels wide or high; larger images are scaled down automatically.
How to convert JPG to JFIF
- 1
Drop your JPG files into the converter above, paste them, or click to choose files.
- 2
JFIF is already selected as the output format. Open Settings to adjust quality, size or metadata.
- 3
Click Convert. Each image is processed on your device in a moment.
- 4
Download your JFIF files one by one, or all together as a ZIP.
Private by design
This JPG to JFIF converter runs entirely in your web browser using the same image engines that display web pages, plus WebAssembly encoders where needed. Your images are never uploaded for this conversion and nothing is stored.
JPG to JFIF: questions & answers
Is converting JPG to JFIF free?
Yes, completely free with no sign-up, no watermark and no daily limit.
Will I lose quality converting JPG to JFIF?
JPG and JFIF use the same compression. The conversion mainly changes the file extension and header; choose a high quality to avoid visible re-compression.
Can I convert multiple JPG files at once?
Yes. Drop as many files as you like; they are converted in parallel and can be downloaded individually or as a single ZIP.
Are my JPG files uploaded?
No. The conversion runs locally in your browser, so your images never leave your device.
Does it work on iPhone and Android?
Yes. The converter works in current versions of Safari, Chrome, Firefox and Edge on phones, tablets and computers. Very large images may exceed the memory available to mobile browsers.
Is JPG the same as JPEG?
Yes. .jpg, .jpeg and .jpe are different extensions for exactly the same format. You can rename one to the other without converting.