Convert BMP to AVIF
Convert BMP files to AVIF in your browser. AVIF files are typically smaller than BMP. Note: converting from lossless BMP to lossy AVIF discards some detail in exchange for smaller files. Free, no upload, no signup.
Output format
AVIF
01 — Overview
Why convert BMP to AVIF
AVIF files are typically much smaller than BMP at equivalent quality — usually the main reason to make this conversion. Smaller files mean faster page loads, smaller email attachments, and less storage.
02 — Comparison
BMP vs AVIF
| Attribute | BMP | AVIF |
|---|---|---|
| Compression | — | Lossy |
| Transparency | No | Yes |
| Animation | No | Yes |
| Typical file size | Very large | Small |
| Browser support | Major browsers will render BMP, but it's never the right choice for the web. | Supported in Chrome, Firefox, Safari 16+, and Edge. Pre-2022 devices may not decode it. |
03 — How to
Three steps
- 01
Drop your BMP files
Drag one or more BMP files onto the dropzone above, or click to browse. Files stay on your device — nothing uploads.
- 02
Convert in your browser
convert.now decodes each BMP and re-encodes it as AVIF via WebAssembly. The conversion runs in a Web Worker so the page stays responsive.
- 03
Download the result
Download a single AVIF file or, for batch conversions, a zip of all converted files. Filenames preserve the originals.
04 — Pillars
Why convert.now
- Private
Files stay in your browser. No upload step. Nothing for anyone to see.
- Fast
No queue, no upload wait. Conversion starts the moment you drop a file.
- Free
No ads. No file-count limit. No sign-up wall. Just the converter.
05 — FAQ
Frequently asked
06 — More