Convert BMP to ICO — Multi-Resolution Favicon Generator
Convert BMP images into official Windows ICO favicon containers. Generate 16x16, 32x32, 48x48, and 256x256 icon layers for browser tabs.
🔒 100% Secure Client-Side🛡️ Zero Server Uploads🔌 Works Offline
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 ICO
Detailed side-by-side analysis of compression algorithms, color depth, transparency, and file size impact
| Technical Specification | BMP (Source) | ICO (Target) |
|---|---|---|
| Full Format Name | Bitmap Image File (Microsoft Windows) | Windows Icon File Container |
| MIME Type | image/bmp | image/x-icon |
| Compression Method | Uncompressed (Raw RGB Raster Grid or RLE) | Embedded Multi-Resolution PNG / BMP bitstreams |
| Color Space & Bit Depth | 1-bit to 32-bit (typically 24-bit TrueColor) | 32-bit (24-bit RGB + 8-bit Alpha Channel) |
| Alpha Transparency | No (Standard 24-bit BMP has no alpha channel) | Yes (Full transparency preserved in modern 32-bit ICO) |
| Animation Support | No (Static Single Frame) | No (Static multi-resolution container) |
| Typical File Size | Very Heavy (Full uncompressed byte-for-byte pixel array) | Small (Stores 16x16, 32x32, 48x48 icon pixel layers) |
| Ideal Applications | Raw uncompressed raster storage, legacy Windows apps, hardware displays | Website browser tab favicons, Windows desktop application shortcuts |
💡 Conversion Impact Summary:
Encapsulates BMP raster pixels into a multi-resolution 32-bit ICO icon container.