Step 1: Add your JPEG files using the button above or by carry and plop.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Pull your converted JFIF files.
JPEG to JFIF Conversion FAQ
How do I convert JPEG to JFIF without losing image quality?
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It helps to know what each side actually is: JPEG is the same codec as JPG under a longer extension — identical DCT pipeline, identical quantisation tables, nothing about the pixels changes with the filename, while JFIF is a plain JPEG bitstream under the original 1992 interchange header, which is why some viewers show it as a generic image and cameras still emit it. Upload your JPEG file and our converter applies format-aware quality optimization for JFIF output — for lossless targets (PNG, TIFF, BMP, PSD) every pixel is preserved; for lossy targets (JPG, WebP, GIF) you can tune the quality factor before download.
Does JPEG to JFIF conversion preserve transparency?
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Transparency survives when going to PNG, WebP, TIFF, GIF, ICO, PSD or SVG. Converting to JPG / JPEG / JFIF flattens the alpha channel against a white background — if you need transparency, target a transparency-aware format instead of JFIF.
What about EXIF metadata when converting JPEG to JFIF?
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In most conversions, camera EXIF fields such as the camera model and GPS position are not carried into the JFIF. There is no setting on this page to keep or remove metadata, so check the result with a metadata viewer if it matters.
Can I batch-convert hundreds of JPEG files to JFIF at once?
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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 resolution and dimensions will my JFIF file have?
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Default behaviour is 1:1 — your JFIF output has the same pixel dimensions as the source JPEG. ICO output is the exception (it produces a multi-resolution stack: 16/32/48/64/128/256). If you need to resize as part of the conversion, use /resize/ after conversion.
Are my JPEG files private during conversion?
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Yes. Uploaded JPEG files are processed on our own conversion servers, no person reviews them, and they are never shared. The upload and the converted JFIF are both deleted automatically about 24 hours after the conversion, which leaves time to download the result. See /privacy/ for the full policy.
Why is my converted JFIF file bigger / smaller than I expected?
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Size is decided by the two compression models, not by the converter. Remember that JPEG is the same codec as JPG under a longer extension — identical DCT pipeline, identical quantisation tables, nothing about the pixels changes with the filename, whereas JFIF is a plain JPEG bitstream under the original 1992 interchange header, which is why some viewers show it as a generic image and cameras still emit it — so a heavily-compressed JPEG usually GROWS when re-encoded into a lossless JFIF, and a bulky lossless JPEG usually shrinks sharply going the other way. Image content matters too: photographs and flat line art compress very differently.
Can I use the converted JFIF file commercially?
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Yes. The conversion is a format change — copyright on the image content stays with you (or whoever held it on the source JPEG). We add no watermark, no metadata stamp, and claim no licence over the output.
