Convert BMP to AVIF

Transform your uncompressed windows bitmap format into AVIF format. Free, private, and browser-based.

How it works

  1. Upload BMP Files — Drag and drop your BMP files into the converter, or click to browse. Common sources: windows screenshots, legacy software exports.
  2. Convert to AVIF — The converter processes your files to AVIF format entirely in your browser. No files are uploaded to any server — your privacy is guaranteed.
  3. Download Results — Download your converted AVIF files instantly. For multiple files, download individually or as a ZIP archive.

Why convert BMP to AVIF

  • Make BMP files accessible on macOS, Linux, and mobile devices
  • Significantly reduce file size — AVIF files are much smaller than BMP
  • Add transparency support — AVIF supports alpha channels for graphic design
  • Leverage AVIF advantages: best compression ratio of any modern format
  • Overcome BMP limitations: extremely large files (no compression)

FAQ

Is BMP to AVIF conversion free?
Yes, Fileza.io converts BMP to AVIF completely free with no limits on file size or number of conversions. No hidden fees, no watermarks, and no account required.

Will I lose quality converting BMP to AVIF?
There is minimal quality loss. AVIF uses lossy compression, so there is a slight reduction compared to the lossless BMP original. Use higher quality settings (85-95%) to minimize the difference.

Is it safe to convert BMP to AVIF online?
Absolutely. Unlike most online converters, Fileza.io processes your files entirely in your browser using WebAssembly. Your BMP files are never uploaded to any server — the conversion runs on your own device, keeping your files 100% private.

Can I convert multiple BMP files to AVIF at once?
Yes, Fileza.io supports batch conversion. Drag and drop multiple BMP files at once and they will all be converted to AVIF simultaneously. Download them individually or as a ZIP archive.

Does BMP to AVIF conversion work on mobile?
Yes, the converter works on any device with a modern web browser — iPhones, iPads, Android phones, and tablets. No app installation required.

Will the converted AVIF files be smaller or larger than BMP?
Yes, AVIF files are typically much smaller than BMP. You can expect significant file size reduction, often 50-90% smaller depending on content and quality settings.

How long does BMP to AVIF conversion take?
Most conversions complete in seconds. The exact time depends on file size and your device performance. Since processing happens locally in your browser, faster devices convert more quickly.

Will my BMP images have transparency after converting to AVIF?
AVIF supports transparency, but the original BMP does not contain transparency data. The converted file will have a white background by default. To add transparency, edit the image after conversion.