Convert BMP images to PNG format with lossless compression. Reduce file size significantly while maintaining perfect image quality. Ideal for web graphics, digital design, and sharing.
No Compression: Fastest conversion but largest file size. Best when speed matters more than file size.
Low Compression: Fast conversion with moderate file size reduction. Good balance for quick tasks.
Recommended: Best balance between file size and conversion speed. Ideal for most uses.
Maximum Compression: Smallest file size but slower conversion. Best for web optimization.
PNG files are significantly smaller than BMP due to lossless compression, while maintaining the exact same image quality. PNG also supports transparency, making it perfect for web graphics, logos, and digital design. BMP files can be 10-50x larger than their PNG equivalents.
No! PNG uses lossless compression, meaning every pixel from your original BMP is preserved exactly. The compression only reduces file size, not image quality. This is different from JPG which uses lossy compression.
For most uses, Medium (6) provides the best balance. Use Maximum (9) when file size is critical (like web optimization). Use No Compression (0) when you need the fastest conversion and file size doesn't matter.
None preserves all original colors. Web Optimized reduces to 256 colors with dithering for better web display. Reduce Colors further reduces colors for smaller files, best for simple graphics. For photos, keep "None" selected.
Currently this tool processes one file at a time for best results. For batch conversion, you can convert files one after another, or check our Image Resizer which supports batch processing for some operations.