Convert BMP to HEIC — Legacy to Modern
BMP files store every pixel without compression, resulting in enormous files that are impractical for sharing or mobile use. HEIC’s advanced HEVC compression reduces file sizes by 97-99% while maintaining excellent visual quality and providing native Apple device compatibility.
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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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BMP vs HEIC Comparison
| Feature | BMP | HEIC |
|---|---|---|
| Full Name | Bitmap Image File | High Efficiency Image Container |
| Lossy Compression | ❌ | ✅ |
| Lossless Compression | ✅ | ✅ |
| Transparency | ❌ | ✅ |
| Animation | ❌ | ❌ |
| Browser Support | Most browsers (legacy format) | Safari, iOS; limited elsewhere |
| Color Depth | 16.7M (24-bit) | 16.7M (24-bit) |
| Typical Use | Windows legacy, uncompressed images | iPhone/iPad photos (default since iOS 11) |
| Year Introduced | 1986 | 2015 |
Why Convert BMP to HEIC?
BMP files are enormous and unsupported by most modern platforms. HEIC provides the most dramatic file size reduction (97-99%) with excellent quality and native support on Apple devices. If you have legacy BMP files that need to be shared or stored efficiently on Apple devices, HEIC is an excellent destination format.
How to Convert BMP to HEIC
Upload your BMP file by dragging it into the converter or clicking to browse. Files up to 50 MB are supported.
KoalaPic reads the uncompressed pixel data and compresses to HEIC using HEVC encoding.
Download the compact HEIC file. Both files are deleted after 1 hour.
Quality Note
Since BMP is uncompressed, you’re starting from a perfect source. HEIC at quality 80+ preserves virtually all visible detail while achieving 97-99% file size reduction. A 5 MB BMP becomes approximately 50-100 KB as HEIC.