AVIF to BMP Converter

What AVIF to BMP conversion does

Convert an AVIF image to BMP directly in your browser. AVIF is a modern, highly efficient format that many older Windows applications, legacy print pipelines, and simple embedded tools still can't open at all — BMP sidesteps that by writing an uncompressed bitmap that Windows software has understood since the 1990s.

How to convert AVIF to BMP

1. Choose a AVIF file.
2. Select Convert & download.
3. Save the .bmp file from your browser downloads.

Why use this conversion

Use this when the software on the other end predates AVIF or simply doesn't support it — old Windows programs, certain print pipelines, and embedded or industrial tooling generally expect an uncompressed bitmap, not a modern compressed codec.

Transparency and output quality

AVIF can carry a full alpha channel, but BMP output here is always 24-bit RGB with no alpha at all. Any transparent pixels in the source are flattened onto a white background, the same convention this tool uses for JPG output. AVIF is one of the most space-efficient formats around, while BMP here is written fully uncompressed. That combination makes AVIF-to-BMP one of the largest size increases possible in this tool family — expect the .bmp to be many times the size of the source .avif.

Privacy and local processing

• Processing occurs locally in the browser.
• Files are not uploaded to Looty Tools for conversion.
• Converted files remain on your device.

Limits and known issues

• Input: AVIF (.avif) only, up to 25.0 MB and 8,192 px per side.
• BMP output has no transparency support in this tool — pick a format that keeps alpha (WebP, TIFF, ICO, TGA, or QOI) instead if the source has transparent areas you need to preserve.
• If the source AVIF happens to be animated, only its first frame is converted to BMP; the rest of the animation is discarded. Most AVIF files are static, so this only matters for the less common animated (AVIS) profile.
• Metadata is not preserved in the downloaded file.

Related tools

• AVIF to AnyConvert AVIF images into multiple common output formats.
• AVIF to TIFFConvert AVIF images to TIFF for print and archival use.
• AVIF to GIFConvert AVIF images to a static GIF.

AVIF to BMP FAQ

Why convert AVIF to BMP?

AVIF is a modern codec that plenty of older Windows software, legacy print pipelines, and simple embedded tools were never built to read. BMP is the uncompressed bitmap format that Windows software has been able to open since the early 1990s, so it's the fallback when the destination simply can't handle AVIF.

Does BMP output keep transparency?

No. AVIF can carry a full alpha channel, but BMP output here is 24-bit RGB with no alpha at all. Transparent pixels are flattened onto a white background, the same convention used for JPG output.

Why does the BMP end up so much bigger than the AVIF?

AVIF is one of the best-compressing formats around, and this tool writes BMP fully uncompressed (BITMAPINFOHEADER, BI_RGB). Going from a highly efficient codec to an uncompressed bitmap is one of the largest size increases possible among the conversions on this site.

What happens if the source AVIF is animated?

Only the first decodable frame is converted to BMP; the rest of the animation is discarded. Most AVIF files are static single images, so this only matters for the less common animated (AVIS) profile — and AVIF decoding depends on your browser's support.

Are my files uploaded?

No. Conversion runs locally in your browser and does not upload your file to Looty Tools servers.

What is validated before conversion?

The file must actually be an AVIF — the tool checks the ISO-BMFF ftyp brand, not just the filename or extension, before decoding.