Frequently asked questions
Does PNG lose any quality from BMP?
No — PNG is lossless, so converting from BMP keeps every pixel exactly.
Why not keep it as BMP?
BMP is rarely used today; PNG is universally supported and far smaller for the same quality.
Do I need to install anything?
No software and no sign-up. The BMP-to-PNG converter runs in your web browser, so it works on any device — Windows, Mac, Android or iPhone — straight from this page.
Can I convert more than one file at once?
Yes. Drop in several images and they are converted together; a single file downloads directly, while a batch arrives as a ZIP.
Is anything uploaded?
No. Conversion happens entirely in your browser — your images never leave your device.
Why convert BMP to PNG?
Convert BMP to PNG for a modern, widely-supported lossless format that is still much smaller than BMP.
Understanding the two formats
BMP — BMP. BMP is an old Windows bitmap format that stores images completely uncompressed. That means perfect quality but enormous files — often five to ten times larger than an equivalent JPG or PNG. BMP is rarely used on the modern web, so converting to a compressed format dramatically cuts the size with little or no visible loss.
PNG — PNG. PNG is a lossless format, meaning it reproduces every pixel exactly with no compression artefacts. That makes it the right choice for screenshots, logos, icons, diagrams and anything with crisp edges or flat colour, and it fully supports transparency. The trade-off is size: a photograph saved as PNG can be several times larger than the same image as JPG, so PNG is not suited to camera photos you need to keep small.
What to expect from the conversion
PNG compresses losslessly, so you keep exact pixel data while cutting file size compared to uncompressed BMP.
How to convert BMP to PNG
Drop your BMP file into the box above (or click to browse and select it), and the tool converts it to PNG right away. The PNG output is already selected for you, so you can simply download the result. Everything happens on your own device — nothing is uploaded, which means even private or sensitive images stay entirely with you.
Need a different conversion, or want to process a batch? The full image converter handles JPG, PNG and WebP together, and you can pair it with the compressor if the result also needs to hit a size limit.