How to convert PNG to BMP
- Add your .PNG file - drop it in the box above or click to browse.
- Convert it to .BMP in a few seconds.
- Download your new .BMP file.
What to expect
- BMP stores raw, uncompressed pixels - a PNG of a few hundred KB can easily become 5 MB or more as BMP.
- Transparency is lost: PNG alpha channels are not supported in standard 24-bit BMP, so transparent areas become white.
- No pixel quality is lost - because PNG is lossless, the BMP output is pixel-identical to the source.
Frequently asked questions
Does converting PNG to BMP lose image quality?
No pixel data is lost because PNG is already lossless. The only things dropped are transparency (alpha channel) and any metadata stored in PNG chunks.
Why is the BMP so much larger than the PNG?
PNG uses DEFLATE compression; BMP stores every pixel as raw bytes with no compression, so file size equals width x height x bytes-per-pixel.
What happens to transparent areas in the PNG?
They become white in the BMP since standard 24-bit BMP has no alpha channel; flatten the image onto your desired background color before converting if needed.
Can I batch-convert many PNG files to BMP?
Yes - IrfanView's Batch Conversion is the easiest GUI option on Windows;
magick mogrify -format bmp *.png handles it on any platform via command line.Programs that convert PNG: Picture Resize Free Online Images Converter · Adobe Fireworks · ACDSee Photo Manager · FormatFactory · IrfanView · Microsoft Expression Design · Paint.NET · PhotoOnWeb
