Convert uncompressed BMP files to ultra-compact AVIF. No installation needed, works on any device. Free, private, and unlimited.

BMP (Bitmap) stores raw pixel data without any compression — a 3000×2000 pixel image weighs around 18 MB. AVIF (AV1 Image File Format) is a next-generation format that achieves extraordinary compression: the same image can be reduced to 200–500 KB with minimal visible quality loss.
AVIF supports millions of colors, alpha transparency, HDR content, and both lossy and lossless modes. It is supported in Chrome 85+, Firefox 93+, Safari 16.4+, and Edge 121+. Converting BMP to AVIF is the most effective way to reduce file size for web use.
If you need maximum browser compatibility, consider converting to WebP instead. For the smallest possible files with the latest browsers, AVIF is the optimal choice.
All processing happens locally in your browser — nothing is sent to any server. No registration, no limits, no watermarks.
Businesses, developers, and creators worldwide rely on image format compatibility. Whether you are preparing product images for Amazon, eBay, Etsy, Shopify, optimizing graphics for WordPress, Wix, Squarespace, or converting photos for government portals worldwide, having the right format matters.
Modern web standards increasingly favor efficient formats. Google PageSpeed Insights and Core Web Vitals metrics reward pages that use optimized images. Converting BMP to AVIF can directly improve your Largest Contentful Paint (LCP) score, which impacts both search rankings and user experience.
For email marketing campaigns and social media, AVIF provides excellent compression while maintaining visual quality. Whether you are a freelancer, small business owner, or enterprise user, this converter handles your image conversion needs reliably and securely.
| Feature | BMP | AVIF |
|---|---|---|
| Lossy compression | ||
| Lossless compression | ||
| Transparency (alpha channel) | ||
| Animation support | ||
| Web browser support | All browsers | Chrome 85+, Firefox 93+, Edge 85+, Safari 16.4+ |
| Color depth | 1/4/8/24/32-bit | 8/10/12-bit, HDR |
| Compact file size | ||
| Metadata (EXIF) |
The quality slider lets you set a value from 60% to 95%. Higher values mean better image quality but larger file sizes.
Since BMP stores raw pixel data, AVIF compression is extremely effective. A typical 18 MB BMP becomes 200–500 KB in AVIF — a 97%+ reduction.
BMP files are uncompressed and extremely large. AVIF provides the most dramatic savings of any conversion:
Photo (3000×2000)
18 MB → 350 KB
Scan (A4, 300 DPI)
25 MB → 180 KB
Screenshot
5.7 MB → 95 KB
Actual savings vary depending on image content and quality settings. The converter shows the exact size before and after conversion for each file.

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