Skip to content
Convertoverse
English

Convert BMP to AVIF

Free, instant and private — your BMP files are converted right in your browser and never uploaded to a server.

How to convert BMP to AVIF

  1. Step 01

    Add your BMP files

    Drop them into the box above or click to browse. You can add several files at once.

  2. Step 02

    Conversion starts instantly

    It runs in your browser using its built-in image engine — no upload, no queue, no waiting.

  3. Step 03

    Download your AVIF files

    Save each file individually or grab them all at once. Done.

Why convert BMP to AVIF?

BMP is the least efficient common image format and AVIF the most efficient — converting often shrinks files by 95% or more while keeping excellent quality. If the image is destined for the web, this is the conversion that gets it there in the smallest possible shape. It all runs in your browser; nothing is uploaded.

BMP vs AVIF at a glance

BMP is Windows' raw bitmap format — pixel data stored uncompressed, which makes files enormous. AVIF is the newest mainstream image format — outstanding compression, but support outside browsers is still patchy.

PropertyBMPAVIF
Extension.bmp, .dib.avif
Full nameBitmap Image FileAV1 Image File Format
First released19902019
Developed byMicrosoftAlliance for Open Media
CompressionLosslessLossy
TransparencyNoYes
AnimationNoYes
Best forraw uncompressed bitmaps from Windows appsnext-generation web images with maximum compression

BMP to AVIF — frequently asked questions

Is this BMP to AVIF converter really free?

Yes — completely free, with no sign-up, no watermarks and no daily limits.

Are my BMP files uploaded to a server?

No. The conversion happens entirely on your device using your browser's built-in image engine. Your BMP files never leave your computer or phone — which is also why the conversion is nearly instant.

Will I lose quality converting to AVIF?

AVIF uses lossy compression, so the image is re-encoded at high quality (92%). For photos the difference is practically invisible; for text-heavy graphics or logos, a lossless format like PNG preserves sharp edges better.

Why are BMP files so big in the first place?

BMP typically stores every pixel's color values raw, with no compression at all. AVIF compresses the same image down to a tiny fraction of that using the modern AV1 codec.

Do all browsers support AVIF?

Every current browser displays AVIF. A few older ones don't, so keep a JPG or WebP fallback if you need to support them.

Related conversions

Need the reverse? Convert AVIF to BMPExplore the AVIF converter