Convert ICO to BMP — Uncompressed
An ICO and a BMP are close relatives — the icon format grew out of the Windows bitmap. Converting between them is mostly about escaping the icon container for tools that read plain bitmaps and nothing else.
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HEIC, WEBP, AVIF, TIFF, BMP, SVG, GIF, PNG, JPG, PDF, CR2, NEF, ARW, DNG — up to 50MB each, or 50 from a folder
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Modern format with excellent compression. Limited browser support.
Apple's format. Excellent quality at small sizes.
Lossless format. Large files, ideal for print/archival.
256 colors max. Best for simple graphics.
Uncompressed bitmap. Very large files.
Vector trace. Best for logos and simple graphics. Not a pixel-perfect conversion.
Same format? You might want to compress instead.
SSIM-optimized — finds the lowest file size at your chosen visual fidelity.
Need to crop first? Use the Crop tool. Want to adjust or filter? Try the Editor.
Resize tool → Live preview, percentage scaling, and dimension presets.
Tip: Use PNG or WebP for transparent output. Standalone tool →
Lossless format — files can be large
GIF is limited to 256 colors
Best for logos, icons, and line art. Photos produce stylized results.
BMP files are uncompressed and can be very large. Consider TIFF (LZW) or PNG for lossless with smaller file sizes.
Leave empty for all pages. Multi-page PDFs produce a ZIP.
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ICO vs BMP Comparison
| Feature | ICO | BMP |
|---|---|---|
| Full Name | Icon File Format | Bitmap Image File |
| Lossy Compression | ❌ | ❌ |
| Lossless Compression | ✅ | ✅ |
| Transparency | ✅ | ❌ |
| Animation | ❌ | ❌ |
| Browser Support | All browsers (favicon) | Most browsers (legacy format) |
| Color Depth | 16.7M (24/32-bit) | 16.7M (24-bit) |
| Typical Use | Website favicons, Windows application icons | Windows legacy, uncompressed images |
| Year Introduced | 1985 | 1986 |
Why Convert ICO to BMP?
BMP is uncompressed, so it is larger than PNG with no quality advantage — both are lossless. Its reason to exist here is toolchains that read bitmaps and nothing more modern.
How to Convert ICO to BMP
Upload your .ico file.
The largest entry is extracted and written as a 24-bit uncompressed bitmap.
Download the BMP. Transparency is flattened, since the output has no alpha channel.
Quality Note
Lossless, and uncompressed. A 256-pixel square lands around 256 KB, which is large for an icon and trivial in absolute terms. The pixels are identical to the PNG equivalent.