Turn your BMPs into AVIFs in seconds
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or click to browse your files · Max file size: 1 GB
Max file size: 1 GB
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BMP is an uncompressed (or minimally compressed) raster image format native to Windows, resulting in large file sizes but no quality loss.
AVIF is a modern image format based on the AV1 video codec, offering very high compression efficiency compared to older formats like JPEG.
Frequently asked questions
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Is it free?
Yes — converting files on TransConvert is free, with no sign-up required.
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Does converting reduce quality?
It depends on the formats involved — some conversions keep everything exactly, others may show a small trade-off if the target format itself is lossy. We never add any extra compression beyond what the format requires.
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Is my file kept afterwards?
No — files are processed to produce your download and are not kept afterwards.
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What's the largest file I can convert?
Files up to 1 GB are supported.