Convert ICO to BMP Online - Free, Local & Instant
Convert ICO (image/x-icon) to 32-bit Uncompressed Bitmap (.bmp) locally in your browser using HTML5 Canvas. Adjust compression quality, resize in pixels, and download instantly with zero server uploads.
Technical Comparison: ICO vs BMP
Images & Game/Web Assets| Specification | ICO (Source) | BMP (Target) |
|---|---|---|
| Format Name | Windows & Web Favicon Icon | 32-bit Uncompressed Bitmap |
| MIME Type | image/x-icon | image/bmp |
| Transparency / Alpha | Yes (32-bit PNG frames) | Preserved for PNG, WEBP, AVIF, ICO, SVG, BMP |
| Compression Profile | Multi-resolution icon container | uncompressed DIB pixel buffer for C/C++ engines, embedded displays, and legacy tools |
| Processing Engine | Native Browser Image Decoder | HTML5 Canvas + Client-Side Binary Encoder |
ICO to BMP — Before & After Example
Input File: asset.ico MIME Type: image/x-icon Alpha: Yes (32-bit PNG frames) Compression: Multi-resolution icon container Decoding: Browser HTML5 Image + Canvas 2D Context
Output File: converted.bmp MIME Type: image/bmp Pipeline: High-quality bicubic Canvas resampling -> Blob download Best For: uncompressed DIB pixel buffer for C/C++ engines, embedded displays, and legacy tools
Frequently Asked Questions: ICO to BMP
Does converting ICO to BMP upload my images to a remote server? ▾
Never. Every ICO file you select is decoded directly in your browser using the HTML5 Canvas API and FileReader API. Your images stay in your computer or phone RAM at all times.
Can I resize and adjust compression quality when converting ICO to BMP? ▾
Yes. Use the Quality slider (10%–100%) and the Width/Height pixel inputs above the drop zone. Keeping "Lock Ratio" checked preserves your original aspect ratio automatically.
Does this converter support batch ICO to BMP conversion with ZIP download? ▾
Yes. Drag and drop multiple ICO files at once; you can download each converted BMP individually or click "Download All (.ZIP)" to bundle them locally via JSZip.
Why use BMP instead of ICO? ▾
Converting ICO to BMP gives you uncompressed DIB pixel buffer for C/C++ engines, embedded displays, and legacy tools while keeping full control over pixel dimensions and byte size.