PNG to BMP Converter
Convert PNG images to uncompressed BMP bitmap format instantly in your browser. No quality loss, no upload needed. Free and private.
🖼️ Image Tools
Free
Browser-based
What Is BMP Format?
BMP (Bitmap) is an uncompressed raster format developed by Microsoft. Every pixel is stored directly with no compression, so BMP files are large but require minimal decoding — making them ideal for embedded systems, legacy Windows applications and situations where simplicity and compatibility matter more than file size.
BMP Format Specs
| Property | Value |
|---|---|
| Compression | None (BI_RGB) |
| Colour depth | 24-bit RGB |
| Transparency | Not supported (transparent pixels filled white) |
| File size | Width × Height × 3 bytes + 54-byte header |
When to Use BMP
BMP is rarely used on the web due to its large size, but is the native format for Windows Paint and many embedded/industrial imaging systems. It is also accepted as lossless input by many professional image editors.