Convert BMP to WEBP — Maximum Compression
Go from the least efficient image format (BMP, no compression) to one of the most efficient (WEBP, advanced compression). Expect 95-99% file size reductions with great visual quality.
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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.
Conversion complete!
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BMP vs WEBP Comparison
| Feature | BMP | WEBP |
|---|---|---|
| Full Name | Bitmap Image File | Web Picture Format |
| Lossy Compression | ❌ | ✅ |
| Lossless Compression | ✅ | ✅ |
| Transparency | ❌ | ✅ |
| Animation | ❌ | ✅ |
| Browser Support | Most browsers (legacy format) | All modern browsers (Chrome, Firefox, Safari 14+, Edge) |
| Color Depth | 16.7M (24-bit) | 16.7M+ (24/32-bit) |
| Typical Use | Windows legacy, uncompressed images | Web images (smaller than JPG/PNG with same quality) |
| Year Introduced | 1986 | 2010 |
Why Convert BMP to WEBP?
If you have BMP files destined for the web, WEBP is the optimal target. You'll get the smallest possible files with transparency support, making your content load faster.
How to Convert BMP to WEBP
Upload your BMP file.
KoalaPic converts to WEBP at your chosen quality.
Download your highly optimized WEBP file.
Quality Note
BMP to WEBP is the single most dramatic file size reduction available. A 6 MB BMP might become 50-100 KB as WEBP at quality 85%. The visual difference is negligible.