Is transparency preserved when converting AVIF to BMP?

With 32-bit BMP, the alpha channel data is stored. However, many programs ignore 32-bit BMP transparency. For reliable transparency support, use PNG format instead.

AVIF to BMP Converter - Free Online Tool

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AVIF Batch Upload

Max 20MB per file • Up to 10 files

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Conversion Settings

BMP Bit Depth

24-bit RGB Standard bitmap (no transparency) 32-bit RGBA Includes alpha channel (larger file)

Uncompressed format: BMP stores images without compression, resulting in larger files but perfect quality. 24-bit is widely compatible; 32-bit preserves transparency but some older programs may not support it.

Resize Options

Resize during conversion

Note: BMP files are uncompressed and will be significantly larger than AVIF. Consider using PNG or JPG if file size matters.

How to Convert AVIF to BMP

Upload your AVIF images by dragging and dropping or clicking the upload area. You can select up to 10 files at once for batch conversion.

Choose bit depth: Select 24-bit for standard images or 32-bit if you need to preserve transparency data (though note that not all software supports 32-bit BMP transparency).

Optional resizing: Enable resize to change dimensions by percentage or specific pixel values during conversion.

Convert and download: Click the convert button and download individual files or all as a ZIP archive.

Pro tip: Need sample AVIF files to test? Visit our sample images page to download test files. Use our AVIF Analyzer to check your image properties before converting, or try BMP to ICO if you need to create Windows icons from the converted images.

AVIF vs BMP Comparison

AVIF

Modern next-gen format with excellent compression based on the AV1 video codec. Supports both lossy and lossless modes, transparency, and HDR. Still gaining browser support but offers 50% smaller files than JPEG at similar quality. Learn more with our AVIF analyzer tool.

BMP

The native Windows bitmap format since 1987. Stores images without compression for perfect quality but large file sizes. Universal Windows compatibility makes it ideal for legacy software, clipboard operations, and icon creation. View BMP files with our BMP viewer.

When to Convert AVIF to BMP

Legacy Software

Many older Windows applications only support BMP format. If you need to open images in vintage software or specialized industrial applications, BMP ensures compatibility.

Windows Clipboard

BMP is the native format for Windows clipboard operations. Converting to BMP makes copy-paste between applications more reliable.

Print & Scanning

Some scanners and printing software prefer BMP format. The uncompressed nature ensures no quality loss in professional printing workflows.

Icon Creation

Creating Windows icons often requires BMP format as an intermediate step. Convert AVIF to BMP, then use our BMP to ICO converter to create favicons.

BMP Bit Depth Explained

24-bit

Standard RGB. 8 bits per channel (Red, Green, Blue) = 16.7 million colors. This is the most compatible format supported by all software. Transparency becomes white or black background.

32-bit

RGBA with alpha. Adds an 8-bit alpha channel for transparency. Larger file size. Note: Many older Windows programs ignore the alpha channel, so transparency may not display correctly. Consider using PNG format for transparent images.

For maximum compatibility, use 24-bit unless you specifically need to preserve transparency data for specialized software.

Frequently Asked Questions

BMP is the native Windows bitmap format with universal compatibility. While AVIF offers superior compression, many legacy applications, industrial software, and older Windows programs only support BMP. Convert when working with specialized software or creating Windows icons.

If your AVIF was saved with lossy compression, you won't recover lost data. However, BMP stores images without any additional compression, so no further quality is lost during conversion. The BMP output maintains exactly what was in the decoded AVIF.

Yes, significantly larger. BMP is uncompressed while AVIF uses highly efficient compression. Expect BMP files to be 10-50x larger depending on image content. If file size matters, consider using PNG or JPG instead.

With 32-bit BMP, the alpha channel data is stored in the file. However, many programs ignore 32-bit BMP transparency and display a solid background instead. For reliable transparency support, use PNG format instead.

Virtually all Windows software supports BMP including Paint, Photoshop, GIMP, Office applications, and legacy programs. It's also supported on macOS and Linux. BMP is one of the most universally compatible image formats available.

Yes, each AVIF file can be up to 20MB in size, and you can upload up to 10 files at once for batch conversion. The resulting BMP files may be larger due to the uncompressed format.

Files are temporarily stored only during the conversion process and are automatically deleted within 24 hours. When possible, conversions happen directly in your browser for maximum privacy. We don't keep copies of your images.