Step 1: Provide your BMP files using the button above or by toss and let go.
Step 2: Click the 'Convert' button to start the conversion.
Step 3: Fetch your converted JFIF files.
BMP to JFIF Conversion FAQ
Does BMP to JFIF conversion preserve transparency?
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Transparency survives when JFIF is PNG, WebP, TIFF, GIF, or SVG. Converting to JPG flattens the alpha channel against a white background — if you need transparency, pick a transparency-aware target instead of JFIF. JFIF is the JPEG File Interchange Format — the header specification that makes a raw JPEG bitstream into a portable file.
How much quality will I lose going from BMP to JFIF?
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At quality 80-85 the difference is invisible at normal viewing distance and the file typically drops by 60-80%. The catch is that it is one-way: re-saving the JFIF repeatedly compounds the artefacts each time. Keep the BMP as the master and regenerate the JFIF from it whenever you need a new size. BMP needs no decoder library at all, so it remains the safe interchange format for embedded systems and legacy Windows tooling. The image data is ordinary JPEG; JFIF just defines the density and thumbnail fields around it, so a .jfif and a .jpg are the same picture.
What happens to EXIF metadata when converting BMP 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 BMP 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.
Are my BMP files private during conversion?
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Yes. Uploaded BMP 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 or smaller than expected?
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A BMP file with strong compression (heavily lossy JPG) often grows when re-encoded into a lossless JFIF (PNG, TIFF), and a high-bitrate lossless BMP often shrinks dramatically when going to JPG/WebP. The ratio depends on the image content (photos compress differently from line-art or screenshots). BMP is gigantic — a 12-megapixel photo is around 36 MB — and no browser treats it as a sane web format. The .jfif extension confuses Windows and many web apps into refusing the file, which is usually the only reason anyone converts it.
