Convert BMP to AVIF — usually much smaller files
Free and unlimited, and nothing is uploaded: it all runs in your own browser. Open Image Converter
What changes when you convert BMP to AVIF
- BMP image is lossless and AVIF image is lossy: the quality slider decides how much detail is traded for size, and output files are usually far smaller.
- AVIF image supports transparency, but the source has none to keep — nothing is invented.
- AVIF image encoding exposes a quality control; around 80 is the usual sweet spot.
- Encoding is noticeably slower than JPG/WEBP because AV1 is expensive to encode.
How to convert BMP to AVIF
- Add your BMP file — drag it onto the page or choose it. It stays on your device.
- Pick AVIF as the output format and set the quality slider.
- Press convert and download the result — individually or as one ZIP.
Questions
How do I convert BMP to AVIF for free?
Add your BMP file on this site, choose AVIF, and press convert. The whole conversion runs in your own browser — nothing is uploaded — and the AVIF file downloads straight from your device.
Will converting BMP to AVIF lose quality?
BMP image is lossless and AVIF image is lossy: the quality slider decides how much detail is traded for size, and output files are usually far smaller.
Does AVIF keep everything BMP supports?
Yes within the format’s own limits — pixels, timing and structure survive the conversion.