AVIF to BMP Converter
Convert AVIF to BMP free — no upload, no signup
To convert AVIF to BMP, drop your AVIF images into the box below, click Convert, then Download. Fylo does the work inside your browser, so nothing is uploaded and there's no signup or watermark. Decode AVIF into a raw, uncompressed Windows bitmap.
Drop images here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
No settings needed — BMP output keeps every pixel. Options are under Advanced.
Advanced
Leave empty to keep the original size.
How to convert AVIF to BMP
Add your AVIF files
Drag and drop AVIF files into the box, tap to choose them, or paste with Ctrl+V. You can add many at once.
Pick a background
BMP has no transparency; transparent areas use white unless you choose another colour under Advanced.
Convert and download
Click Convert, then download each BMP or get them all in one ZIP.
Why convert AVIF to BMP?
Scientific, industrial and legacy Windows software often needs raw bitmaps. Converting AVIF straight to BMP removes the need for an AV1 decoder on the target machine.
Does converting AVIF to BMP affect quality or size?
The BMP holds the decoded pixels without compression, so a small AVIF can become a file dozens of times larger. HDR images are reduced to 8-bit colour and transparency is flattened onto a solid background.
What's the difference between AVIF and BMP?
AVIF is a modern format based on the AV1 video codec. It often produces files about half the size of JPG with fewer artefacts, and supports transparency and HDR.
BMP is Microsoft's uncompressed bitmap format. It's simple and lossless but huge: every pixel is stored raw, so a 12-megapixel photo takes about 36 MB.
Learn more: AVIF format guide · BMP format guide
| Property | AVIF | BMP |
|---|---|---|
| Compression | Lossy or lossless (AV1) | Usually none (optional RLE) |
| Transparency | Yes — full alpha | Rarely (32-bit only) |
| Animation | Yes | No |
| Colour depth | 8, 10 or 12-bit, HDR | 1 to 32-bit |
| Typical size, 12 MP photo | ≈ 0.8–1.5 MB | ≈ 36 MB |
| Support | Chrome 85+, Firefox 93+, Safari 16+, Edge 121+ | Windows, most editors, all major browsers |
| Best for | Fast websites, hero images, photo galleries | Legacy Windows software, embedded displays |
| Introduced | 2019 | 1985 |
Frequently asked questions
Why is my BMP 30 times larger than the AVIF?
AVIF is one of the most efficient compressed formats; BMP isn't compressed at all. A 1920 × 1080 image is about 6.2 MB as BMP regardless of content.
Does BMP support HDR?
No. Standard BMP stores 8 bits per colour channel, so HDR detail is mapped to normal range.
Are my AVIF files uploaded to a server?
No. Fylo converts AVIF to BMP entirely inside your browser using a background Web Worker, so your files never leave your device. That's also why it's fast — there's no upload or download wait.
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