Convert BMP to PNG
Convert BMP to compressed PNG
100% in your browser — files never leave your device
Frequently asked questions
How do I convert BMP to PNG?
BMP is an old Windows format that stores images with little or no compression, so files often run 5–10x larger than a PNG of the same picture. Converting screenshots or scans out of BMP is one of the easiest wins for cutting file size without losing quality.
Is this BMP to PNG converter free?
Yes — completely free with no signup, no watermarks, and no file limits. The tool is open source and will stay free.
Do my BMP files get uploaded to a server?
No. Conversion runs entirely in your browser using WebAssembly. Your BMP files never leave your device, which also makes it faster than upload-based converters.
Will converting BMP to PNG lose quality?
PNG is a lossless format, so no image data is discarded during conversion.
Can I convert multiple BMP files at once?
Yes. Drop as many BMP files as you like — they convert in batch and you can download the results individually or as a single ZIP.
Will I lose quality converting BMP to PNG?
No. Most BMP files are stored uncompressed, and PNG's compression is lossless, so the pixel data carries over exactly — same image, much smaller file.