Private browser tool

Convert AVIF to BMP

Turn a compact AVIF image into a 32-bit BMP for compatible Windows and legacy software.

BMP Choose a AVIF image or drag and drop it here

One AVIF image at a time

Output format: BMP

Resize (optional)

WidthHeight

Lock aspect ratio Do not enlarge the image

Output filename

The BMP is newly encoded without the source metadata.

AVIF conversion guide

How to convert AVIF to BMP

Choose an AVIF, optionally resize it, and download a newly encoded BMP.

Select an image from your device or drag it into the upload area.

Resize the image if you need different output dimensions.

Review the preview and file size, then save the converted image.

This free online AVIF to BMP converter includes the following controls and output tools:

Private browser conversion. The image is processed locally and is not uploaded.
Custom dimensions. Set an exact width and height, lock the aspect ratio, and prevent accidental enlargement.
Lossless output encoding. The visible decoded pixels are written without an additional lossy quality setting.
Before-and-after preview. Review the original and converted image, output dimensions, format, and file size.
File-size comparison. See the original and converted sizes and the percentage change.
Custom filename. Rename the converted file before downloading it.
Metadata-free export. The newly encoded BMP does not copy source metadata.

BMP can help with legacy applications that do not support AVIF.

The output will usually be much larger because BMP stores uncompressed pixel data.

AVIF decoding depends on browser support. The BMP includes alpha bytes, but transparency varies by application.

A PNG copy is used for previewing, and source metadata is not copied.

Is this AVIF to BMP converter free?

Yes. Convert one AVIF at a time.

Why will my AVIF not open?

Your browser may not support the file.

Why is BMP much larger?

It stores uncompressed 32-bit pixels.

Will transparency work?

Alpha is written, but destination support varies.

Is my AVIF uploaded?

No. Conversion happens locally.

Use the full converter for HEIC, PNG, WebP, JPG, GIF, TIFF, BMP, AVIF, and more.