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AVIF to BMP converter

This AVIF to BMP converter turns AVIF images into uncompressed 24-bit BMP files for older software, embedded displays and tools that only read bitmaps.

Width × height (px)

How to convert AVIF to BMP

  1. Choose or drop one or more AVIF files above.
  2. Conversion starts right away. Resize first if you need different dimensions.
  3. Download each BMP, or save them all as a ZIP.

Why convert AVIF to BMP?

AVIF is a modern, highly compressed format, while BMP is one of the simplest. Some older Windows programs, embedded screens, lab tools and hobby projects can only read BMP. Converting an AVIF to BMP gets the picture into a format those tools accept.

What to expect

  • Very large files. A BMP stores every pixel, so a 12-megapixel picture becomes about 36MB, many times bigger than the AVIF.
  • No transparency. Transparent areas turn white in the 24-bit BMP.
  • No metadata, and no extra quality loss beyond what the AVIF already had.

Keep the size under control

If your device has a screen or memory limit, use the Resize setting before converting. A picture of 800 by 480 pixels is only about 1.2MB as a BMP. Resizing first is faster than converting a large image and shrinking it later.

Related tools

Need a file that is easy to share? Use AVIF to JPG. For a plain lossless picture, try AVIF to PNG. Going from JPEG, see JPEG to BMP.

Privacy, speed and file names

Every AVIF file is opened and saved as BMP inside your browser, so nothing is uploaded and conversion starts right away. Speed depends on your device, not your connection. Results are named after the original with “-tech9pros” added, so your originals are never overwritten. BMP files are large, so use Resize first if your device has a size limit.

Converting many files

Select up to 30 files at once and download them one by one or as a single ZIP. If you change a setting, the files are converted again with the new value, so you can try a different quality without adding them again.

If something goes wrong

If a file will not open, update your browser. If the BMP is too large for your device, resize the picture and convert again.

Frequently asked questions

Why is the BMP so large?

BMP does not compress the picture. Every pixel takes three bytes, so the file grows with the pixel count.

Which kind of BMP does it make?

An uncompressed 24-bit Windows bitmap, which Paint, most viewers and most embedded tools can read.

Does it keep transparency?

No. BMP files from this tool have no alpha channel, so transparent areas become white.