Drop your JPEG file(s) here
You can add more than one file
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JFIF and JPEG describe the same thing. A JPEG to JFIF conversion writes your image out under the .jfif extension, which is what an intake system, a scanner utility or a piece of legacy software is asking for when it refuses a perfectly ordinary photo.
The JPEG specification describes how to compress an image. JFIF describes how to store that compressed data in a file. Nearly every .jpg on your machine is a JFIF file already, which is why converting between them changes so little.
The extension, and very little else. Dimensions, colour and the compression itself all come across as they were. The one thing worth knowing is that the image passes through the encoder again, so as with any JPEG round trip, work from your original rather than from a file that has already been converted a few times.
Windows Photos, macOS Preview and every mainstream editor read them without a word. If some particular program refuses, it is going by the extension rather than the contents, and renaming it to .jpg will satisfy it immediately.
Extension matched exactly
Files are written with the .jfif ending a strict validator is looking for.
Nothing rescaled
The picture keeps its original width, height and colour.
Several files per run
A whole intake folder can be prepared in one go rather than file by file.
Free to convert
There is no charge for a single image or for a full batch.
JPEG to WEBP Converter
Turn JPEG photos into smaller WebP files that every modern browser displays.
JPEG to GIF Converter
Turn JPEG photos into single frame GIF images for systems that will only take a GIF.
JPEG to AVIF Converter
Re-compress JPEG photographs as AVIF files that are dramatically lighter at similar visible quality.
JFIF to JPEG Converter
Rename .jfif images to the .jpeg extension that every program and upload form recognises.
Barely. A few kilobytes either way depending on how the original was encoded, which is normal for any JPEG rewrite.
You can send it, though some recipients' software will not preview it inline and will treat it as an attachment to download. Rename it to .jpg if that matters.
Bring it back to this converter with JPEG as the target, or simply edit the extension by hand, since the contents already are a JPEG.
Most editors treat it as the same thing as JPEG and only list one option. Saving as JPEG and renaming gives you an identical file.