Step 1: Supply your JPG files using the button above or by haul and lay.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Get your converted JFIF files.
JPG to JFIF Conversion FAQ
Will background and colour fidelity be preserved?
+
Neither JPG nor JFIF carries an alpha channel, so the background renders as a solid colour and pixel colour data is preserved end-to-end. JPG is the JPEG standard from 1992, served under the .jpg, .jpeg and .jfif extensions alike, and after three decades it is still the format most cameras and most websites use for photographs.
Is the JPG to JFIF conversion reversible?
+
You can convert the JFIF back to JPG on this site. If either format involved is lossy, the round-trip is not bit-perfect even though it is visually or audibly close.
What output quality should I expect from JPG to JFIF?
+
Default settings target broadcast / web quality — visually identical to the source for most viewers. For archival use, pick the highest quality option in the converter settings.
Will my CMYK colour survive the conversion to JFIF?
+
It is converted to sRGB, because JFIF has no CMYK mode. For screen use that is exactly what you want. For commercial print it is not — the gamut shift changes how saturated colours reproduce on press, so send the printer the original JPG rather than the JFIF. The .jfif extension confuses Windows and many web apps into refusing the file, which is usually the only reason anyone converts it.
Is there a file-size limit when converting JPG to JFIF?
+
Free conversions have a size limit per file, set by the type of file, and the page tells you when a file is over it. A paid plan removes that limit, so much larger files can be converted.
Can I batch-convert several JPG files to JFIF at once?
+
Several files in one job need a paid plan. Free use is one file per conversion, one conversion an hour. On a paid plan you can add several files to one job, then download each result on its own or all of them in one ZIP.
What happens to my JPG files after the conversion?
+
Uploaded files are processed on our own conversion servers, nobody looks at them, and they are not shared. The upload and the converted file are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy.
Where can I open a JFIF file?
+
JFIF opens in mainstream image viewers and editors. For web embedding, consider converting to PNG or WebP first since JFIF is not always natively supported in browsers.
Do I need to install software to convert JPG to JFIF?
+
No. The converter runs entirely in your browser plus our cloud — no plugin, no install, no admin rights. It works on Windows, macOS, Linux, ChromeOS, iOS, and Android.
Do I need an account to convert JPG to JFIF?
+
Yes. One conversion an hour is free, with no account needed, for a file within the free size limit. A paid plan removes the hourly limit and the size limit, and lets you add several files to one job.
Is there an API for JPG to JFIF conversion?
+
Yes. Every conversion this site offers is also exposed via a JSON API — see /api/ for endpoints, authentication, and rate limits. JPG to JFIF is one of the supported pairs.
What if my JPG fails to convert to JFIF?
+
Failures are usually caused by corrupted source files or unsupported JPG variants. Re-export from the original app and try again; if it still fails, the contact page forwards the file to support so we can diagnose.
