BMP to PNG
Convert BMP bitmaps to PNG — lossless, smaller, and able to keep transparency. Free, fast and secure, no sign-up. Everything runs locally in your browser and your file is never uploaded.
Drag & drop or click to select filesSelect one or more BMP images
Frequently asked questions
Yes. PNG compression keeps every pixel intact; it just squeezes out the redundancy in the BMP, so the image looks identical while the file gets meaningfully smaller.
It does. PNG supports a full alpha channel, so any transparency in the source BMP is preserved — handy for icons and design assets.
Updated · image cat team