Convert BMP to AVIF

Convert BMP files to AVIF locally, completely free and with maximum privacy.

Drag and drop your files here

or click to browse local files (large files supported, limited only by browser RAM)

Upload Files

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How to convert BMP to AVIF

  1. Drop your .bmp files above, or click Upload Files. You can add many files at once.
  2. AVIF is already selected as the output. Open the settings (gear icon) to fine-tune the result.
  3. Click Convert All. ImageMagick runs inside your browser through WebAssembly; nothing is uploaded.
  4. Download your .avif files as soon as each one finishes.

What to know about BMP to AVIF conversion

  • AVIF supports both lossy and lossless compression and typically produces smaller files than older formats at the same visual quality.
  • AVIF is best for high-quality web images with the smallest possible file size, and opens in Chrome, Firefox, Edge and Safari 16+.

BMP vs AVIF

FeatureBMP (Bitmap Image File)AVIF (AV1 Image File Format)
Compressionuncompressedlossy or lossless
TransparencyNoYes
AnimationNoYes
Best forpixel-exact images for legacy Windows softwarehigh-quality web images with the smallest possible file size
Opens inWindows apps and most image editorsChrome, Firefox, Edge and Safari 16+

BMP (Bitmap Image File): A classic uncompressed raster graphics format developed by Microsoft, preserving pixel-perfect quality.

AVIF (AV1 Image File Format): A cutting-edge image format offering outstanding compression efficiency and image quality based on the AV1 video codec.

Conversion options

  • Quality (1–100)
  • Resize by width, height or both (aspect ratio is preserved)
  • Filters: grayscale, sepia, blur and sharpen
  • Custom output file name

Frequently asked questions

Is it safe to convert BMP to AVIF here?

Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.

Is there a file size limit?

There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.

Can I convert several BMP files at once?

Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.

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