Convert JPG to BMP
Uncompressed, for older Windows software that refuses anything else.
About this converter
JPG is the universal lossy photo format, supported by essentially every device and application ever made. BMP is an uncompressed Windows bitmap format producing very large files, still common in legacy software.
Almost nobody wants a BMP for its own sake. Converting JPG to BMP happens because a particular program demands one: older Windows software, some scientific instruments, and the odd embedded system that never learned anything newer.
Expect the BMP to be bigger than the JPG you started with — often several times bigger. That is not a fault: BMP stores every pixel exactly rather than approximating them, which is the whole point of it, and it costs space. If what you actually want is a smaller file, compress it instead.
Frequently asked questions
Will converting to BMP reduce the image quality?
No — BMP keeps every detail exactly as it was.
Do my JPG files get sent anywhere?
No. Everything happens on your own device, so your pictures never leave it.