Convert BMP to PNG — Lossless DEFLATE Bitmap Compression
Convert raw Windows BMP images to lossless PNG format. Slash byte-for-byte storage sizes while preserving every original pixel without compression noise.
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Drag & Drop Images or Videos Here
Upload up to 10 files in bulk. Supports PNG, JPG, WebP, GIF, BMP, ICO, SVG, MP4, and WebM.
⚖️ Technical Format Comparison: BMP vs PNG
Detailed side-by-side analysis of compression algorithms, color depth, transparency, and file size impact
| Technical Specification | BMP (Source) | PNG (Target) |
|---|---|---|
| Full Format Name | Bitmap Image File (Microsoft Windows) | Portable Network Graphics |
| MIME Type | image/bmp | image/png |
| Compression Method | Uncompressed (Raw RGB Raster Grid or RLE) | Lossless (DEFLATE / LZ77 + Huffman) |
| Color Space & Bit Depth | 1-bit to 32-bit (typically 24-bit TrueColor) | 24-bit RGB + 8-bit Alpha (TrueColor 16.7M + 256 Alpha Levels) |
| Alpha Transparency | No (Standard 24-bit BMP has no alpha channel) | Yes (Full 8-bit Alpha Channel Transparency) |
| Animation Support | No (Static Single Frame) | No (APNG supported in niche apps) |
| Typical File Size | Very Heavy (Full uncompressed byte-for-byte pixel array) | Medium to Large (preserves exact pixel perfection) |
| Ideal Applications | Raw uncompressed raster storage, legacy Windows apps, hardware displays | Transparent logos, UI icons, screenshots, digital artwork, graphic overlays |
💡 Conversion Impact Summary:
Re-encodes uncompressed BMP pixel matrices using lossless DEFLATE compression, cutting storage by 40%–60% with zero loss.