Convert BMP to PNG — Lossless & Smaller
Upgrade your BMP files to PNG — the modern lossless format. PNG files are significantly smaller than BMP (thanks to DEFLATE compression) while preserving exact pixel quality. Plus you gain transparency support.
Drop your BMP file here
or click to browse · up to 50 MB
Ctrl+Z undo · Ctrl+Y redo
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BMP vs PNG Comparison
| Feature | BMP | PNG |
|---|---|---|
| Full Name | Bitmap Image File | Portable Network Graphics |
| Lossy Compression | ❌ | ❌ |
| Lossless Compression | ✅ | ✅ |
| Transparency | ❌ | ✅ |
| Animation | ❌ | ❌ |
| Browser Support | Most browsers (legacy format) | All browsers, all devices |
| Color Depth | 16.7M (24-bit) | 16.7M+ (24/32/48-bit) |
| Typical Use | Windows legacy, uncompressed images | Screenshots, graphics, logos, images needing transparency |
| Year Introduced | 1986 | 1996 |
Why Convert BMP to PNG?
PNG is the modern replacement for BMP. It offers lossless compression (BMP has none), transparency support, and universal compatibility. Every BMP can be converted to PNG with zero quality loss and significant size savings.
How to Convert BMP to PNG
Upload your BMP file.
KoalaPic converts to lossless PNG. Every pixel is preserved exactly.
Download your smaller PNG file.
Quality Note
This is a lossless conversion — zero quality difference. PNG files are typically 50-80% smaller than equivalent BMPs thanks to DEFLATE compression, with no visual trade-off whatsoever.