BMP vs AVIF — Comparison & Free Converter
Fast, instant BMP to AVIF conversion. No signup required. Just drop your .bmp file and get .avif in seconds.
Batch Settings
Color depth reduction: 32-bit → 12-bit
BMP stores up to 32 bits per channel, but AVIF supports only 12 bits. You may notice banding in smooth gradients (like sky or skin tones) where subtle color transitions are lost.
デジタルの世界では、画像の品質とファイルサイズのバランスは常に重要な課題です。特に、高精細な画像を扱う際、BMP形式はその忠実さゆえにファイルが肥大化しがちです。しかし、AVIFは次世代の画像フォーマットとして、その問題を鮮やかに解決します。驚くほど小さなファイルサイズで、BMPに匹敵するか、それ以上の視覚的な品質を保つことができるのです。これは、ウェブサイトの読み込み速度向上はもちろん、ストレージの効率化にも大きく貢献します。画質を犠牲にすることなく、より軽く、より速く画像を扱いたいと願うすべてのクリエイターやビジネスパーソンにとって、BMPからAVIFへの変換は、まさに理想的な選択と言えるでしょう。この変換ツールは、あなたのデジタルワークフローをよりスムーズで、より快適なものへと導きます。
- 漫画・アニメのウェブ配信
- ビジネス資料の軽量化
- 高精細な写真ポートフォリオ
日本のウェブサイトやデジタルコンテンツでは、縦書き表示や特殊なフォントの使用が多いため、AVIFの高い圧縮率と色再現性は、これらの要素を損なうことなく、より高速な表示を実現する点で特に有用です。
About BMP to AVIF Conversion
BMP or AVIF — which format should you use? The answer depends on your needs. Here's a quick breakdown.
BMP is an uncompressed raster format that preserves every pixel but produces very large files. It has universal platform support. AVIF is the newest image format based on AV1 video codec, delivering exceptional compression — up to 50% smaller than JPEG at the same quality. It has limited platform support.
Full Name: BMP uses Bitmap Image, while AVIF uses AV1 Image File Format. Compression: BMP uses None (uncompressed), while AVIF uses Lossy & Lossless. Transparency: BMP uses No, while AVIF uses Yes.
So when should you convert BMP to AVIF? This conversion is ideal when you You need a file that works in web browsers. This conversion helps you optimize files for fast web delivery.
Converting BMP to AVIF maintains high quality with CocoConvert's optimised encoder settings.
If you've decided AVIF is the right choice, CocoConvert makes the conversion effortless. Upload your .bmp file, pick AVIF, and click Convert — done in seconds. The converter runs on secure servers in Germany, powered by FFmpeg, Sharp, and qpdf. Files are encrypted via TLS and erased within 24 hours.
Free tier: 5 files/hour, 250 MB each. Pro: 100 files/hour, 5 GB each. Works in every modern browser on desktop and mobile.
How to Convert BMP to AVIF
- 1
Choose your BMP file
Upload your .bmp file using drag-and-drop or the file browser. Batch mode lets you add multiple files.
- 2
Set format to AVIF
Select .avif from the output options. The converter applies optimal quality settings automatically.
- 3
Run the conversion
Click Convert. Server-side processing means your device stays fast — even for large image files.
- 4
Get your AVIF file
Download your converted file instantly. Batch downloads are available as a zip archive.
What Happens When You Convert BMP to AVIF
Your BMP image is decoded into raw pixel data, then re-encoded as AVIF.
Your BMP file is decoded — the compressed/stored pixel data is expanded into raw RGB pixels
Pixels are re-encoded using AV1 Image File Format's lossless compression
Metadata (EXIF, ICC profiles) is transferred where AVIF supports it
The AVIF file is saved and ready for download
BMP vs AVIF — Detailed Comparison
| Feature | .BMP | .AVIF |
|---|---|---|
| Full Name | Bitmap Image | AV1 Image File Format |
| Compression | None (uncompressed) | Lossy & Lossless |
| Transparency | No | Yes |
| Animation | No | Yes |
| Color Depth | up to 32 bits/channel | 10 or 12 bits/channel |
| HDR Support | No | Yes |
| Typical File Size | 10–50 MB per photo (uncompressed) | 50% smaller than JPEG at same visual quality |
| Platform Support | Universal | Limited |
| Browser Support | Limited | modern browsers |
| Year Created | 1986 | 2019 |
| Open Standard | No | Yes |
Should You Convert BMP to AVIF?
When to Convert
- ✓You need a file that works in web browsers
Frequently Asked Questions
Should I use BMP or AVIF?
It depends on your goal. BMP preserves full quality. AVIF preserves full quality. Choose based on whether file size or quality matters more for your use case.
Is AVIF higher quality than BMP?
Not necessarily. Converting BMP to AVIF maintains high quality with CocoConvert's optimised encoder settings. Quality depends on the compression type and settings, not just the format name.
Can I convert BMP to AVIF on Mac and Windows?
Yes. CocoConvert is a web-based tool that works in all modern browsers — Chrome, Safari, Firefox, Edge — on any operating system including macOS, Windows, Linux, iOS, and Android.
Is CocoConvert free for BMP to AVIF?
Yes. Free users get 5 conversions per hour (250 MB each). Pro subscribers unlock 100 files per hour, 5 GB per file, and priority processing.
What tools does CocoConvert use for BMP to AVIF?
CocoConvert uses FFmpeg for audio/video, Sharp for images, and qpdf for documents — the same open-source libraries used by Netflix, YouTube, and major enterprise platforms.
Versions are pinned in our worker Dockerfile and re-built via CI on every change.