What happens to transparent areas when converting AVIF to BMP?

BMP has no alpha channel, so transparency cannot be carried over. FileMorf flattens transparent regions onto a clean white background rather than leaving them black, which is what naive converters often produce. If keeping transparency matters, convert to PNG or WebP instead.

Does converting AVIF to BMP improve image quality?

No — detail the original AVIF compression discarded is gone for good, and no format change can restore it. What BMP guarantees is that nothing further is lost: the decoded image is stored exactly, so it will survive repeated edits and saves untouched.

Why won't my AVIF file open in some apps?

AVIF is young: browsers added support between 2020 and 2023 (Chrome 85, Firefox 93, Safari 16), but many desktop editors, viewers, and upload forms still cannot read it — which is exactly the problem converting to BMP solves.

How large will the BMP file be?

Large. FileMorf writes standard uncompressed 24-bit BMP, which needs about 3 bytes per pixel regardless of content — a 4000x3000 image comes out around 34 MB. That is normal for BMP; only use it where a specific application requires the format.

What about animated AVIF files?

An animated AVIF is decoded as its first frame, so the output is a single still image. Static AVIF files — the vast majority — convert in full.

Legacy Format Converter

Convert AVIF to BMP

Convert AVIF images to uncompressed BMP for Windows tools and legacy software.

This conversion runs in this browser tab. The selected file is not uploaded for processing.

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AVIF to BMP, step by step.

These steps describe the AVIF input and the BMP export for this exact route.

Upload AVIF Files

Drag and drop your AVIF images or click to browse. You can queue several files at once.

Click Convert

Conversion runs instantly in your browser — nothing is uploaded.

Download BMP

Save the converted file right away. Multiple images are bundled into a ZIP for one-click download.

What to expect

What matters for BMP output.

Review the behavior this AVIF to BMP tool is designed to preserve, expose, or simplify.

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All processing happens in your browser. Your files never leave your device.

Standard 24-Bit BMP

Output is plain uncompressed BMP, the exact variant that legacy Windows software and embedded tools expect.

Batch Processing

Convert multiple files at once. Download as a convenient ZIP file.

Questions about AVIF and BMP.

Check the format behavior, limitations, and follow-up options before processing a real file.

When software predates modern codecs entirely, BMP is the most universally readable fallback. The conversion decodes the AVIF and writes raw 24-bit pixels — no codec is needed to read the result, but no compression is applied either, so file size grows substantially.

Related routes

Continue from BMP.

Choose another format only when it matches the next job.

BMP to AVIF AVIF to JPG JPG to BMP Browse all conversions

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