Convert BMP to AVIF online
Convert BMP files to AVIF directly in your browser. Your images never leave your device — all processing happens locally for instant, private results.
Drop your images here
or click to choose files
Resize (optional)
Each image is scaled proportionally so its longest side matches this value.
How to convert BMP to AVIF
- 1
Drop your BMP files into the box above, or click to choose them from your device.
- 2
Adjust quality and size if you want — defaults work for most uses.
- 3
Click Convert and wait a moment while your browser processes the files.
- 4
Download each converted AVIF file individually, or grab them all as a ZIP archive.
BMP vs AVIF comparison
| BMP | AVIF | |
|---|---|---|
| Compression | lossless | both |
| Alpha (transparency) | ✓ | ✓ |
| Animation | — | ✓ |
| Vector | — | — |
| Relative size | ~10× JPG | ~0.5× JPG |
| Browser support | Universal — all browsers | Chrome 85+, Firefox 93+, Safari 16+ |
The BMP format is widely used in its niche, but AVIF is often preferred when broad compatibility, smaller file size, or specific feature support matter. Converting between the two lets you pick the right format for each situation — keeping originals in one format for archival and exporting copies in another for sharing. Our converter runs entirely client-side using modern WebAssembly codecs, so conversion is fast, private, and works even on patchy mobile connections. There are no daily limits, no watermarks, no signup, and no ads tracking you across the web. The same engine powers every conversion on this site, and we lazy-load only the codecs needed for your specific BMP to AVIF conversion — keeping the initial page download tiny.
Frequently asked questions
Is this BMP to AVIF converter really free?
Yes — completely free, no signup, no watermarks, no per-day limits.
Do you upload my files to a server?
No. All conversion happens in your browser using WebAssembly. Your files never leave your device.
What is the maximum file size?
50 MB per file, with up to 20 files per batch. On mobile devices we recommend smaller files for memory reasons.
Can I convert multiple BMP files at once?
Yes — drop up to 20 files at once and download them all as a ZIP archive.
Does this work on iPhone and Android?
Yes, the converter works in any modern mobile browser including Safari and Chrome.
Will I lose quality converting from BMP to AVIF?
Quality depends on the formats and your chosen quality setting. Lossless formats like PNG preserve every pixel; lossy formats like JPEG let you trade quality for smaller files.
Why convert BMP to AVIF?
AVIF offers wider compatibility with software and devices than BMP, making it a common choice for sharing and storage.