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Drop one JPG or two hundred. Batch conversion is not a paid feature here.
Convert JPG to BMP
A photo has to be fed to something that reads only raw bitmaps, such as an older industrial control panel or a fixed-function image pipeline.
Runs on your deviceFreeNo sign-upBatch supported
Waiting for files/Engine: on-device/Network requests made: 0
What actually changes
JPG and BMP are not the same picture in two wrappers.
The JPEG is decoded to RGB and written out as uncompressed rows. The visible image is exactly what the JPEG decoded to; the file becomes ten to thirty times larger.
Worth knowing first
Decoding a JPEG does not undo it. The BMP is an uncompressed copy of a lossy image, so all the 8x8 block artefacts are now stored at full size and permanently, and they will be visible if the file is later enlarged.
Questions
JPG to BMP, answered
Does BMP look better than JPG?
No. It is bigger, not better. The quality was fixed when the JPEG was created.
Which BMP bit depth do I get?
24-bit, three bytes per pixel, which is the variant that legacy software reads reliably.
How to convert JPG to BMP
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Choose your settings
Windows Bitmap is lossless, so nothing is thrown away in the conversion.
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Download
Instant, because the file never went anywhere. Nothing expires, since nothing was stored.