Convert AVIF to BMP
Turn AVIF images into BMP bitmaps for older software. Everything happens in your browser, so your images never leave your device.
Why convert AVIF to BMP?
AVIF is efficient, but it's new enough that many apps, editors and upload forms can't open it yet. BMP is simple and uncompressed, and some older or specialised software won't take anything else.
Transparent areas get a background
BMP has no transparency, so any transparent parts of your AVIF are filled with a solid colour. White is the default, and you can pick another colour before converting, for example to match the page or slide the image will sit on. If you need to keep the transparency, convert to PNG or WebP instead.
Animated AVIF files
If your AVIF is animated, only the first frame is converted and you get a still BMP. Non-animated AVIF files convert as normal.
File size and quality
BMP is uncompressed, so nothing more is lost in the conversion. It can't bring back detail the AVIF compression already removed, though. BMP is usually stored uncompressed, so the file will be many times larger: about 36 MB for a 12-megapixel photo.
AVIF and BMP compared
| Property | AVIF | BMP |
|---|---|---|
| Compression | Lossy or lossless | Usually uncompressed |
| Transparency | Yes | No |
| Animation | Yes (rarely used) | No |
| Typical file size | Very small | Very large |
| Best for | Web images where size matters most | Legacy and embedded software |
| Support | Modern browsers; limited in apps | Desktop apps; rare on the web |
Questions
What happens to transparent areas when I convert AVIF to BMP?
BMP can't store transparency, so transparent areas are filled with a background colour. It's white by default, and you can choose any colour before converting.
Can I convert an animated AVIF?
Yes, but only the first frame is kept, so you get a still BMP.
Will converting AVIF to BMP reduce quality?
No further loss: BMP stores the decoded pixels exactly. It can't restore detail the AVIF compression already removed, and the file will be bigger.
Are my AVIF images uploaded anywhere?
No. The conversion runs in your browser, on your own device, so your images are never sent to a server. Once the page and converter have loaded, it keeps working even if your connection drops.