Convert AVIF to BMP on Mac
Select the AVIF files in Finder, press ⌥ F, choose BMP and press Return. FileFlip saves each BMP next to its original and works without an internet connection.

How to convert AVIF to BMP with FileFlip
Select the AVIF files
In Finder or on the Desktop. One file, or a whole folder with ⌘ A.
Press ⌥ F
FileFlip opens next to the selection and lists the formats it can make from AVIF. Type “BMP” to jump to it.
Choose BMP and press Return
The BMP files appear next to the originals with the same names. The AVIF files stay as they are.
AVIF and BMP
AVIF is still new, so plenty of apps and upload forms can’t open it. Some older Windows software and hardware only accept BMP.
What changes when you convert
- BMP is lossless, so the image is saved without further loss.
| Property | AVIF | BMP |
|---|---|---|
| Full name | AV1 Image File Format | Bitmap image |
| Made by | Alliance for Open Media | Microsoft |
| Compression | Lossy or lossless (AV1) | Usually uncompressed |
| Best for | Small, high-quality images on the web | Older software that requires it |
| Opens in | Current versions of Chrome, Firefox and Safari; macOS 13 and later; many apps can’t open it yet | Windows and most image editors |
| File extension | .avif | .bmp |
| In FileFlip | Opens and saves | Opens and saves |
Other ways on a Mac
For one file now and then you may not need FileFlip. These work with what’s already on your Mac.
Preview
Open the AVIF in Preview, choose File → Export, pick Microsoft BMP from the Format menu and click Save. If Microsoft BMP isn’t listed, hold Option while you click the Format menu. For several files, open them together, select all thumbnails in the sidebar and choose File → Export Selected Images.
Good for a few files now and then.
Terminal
The sips command converts images in place or into a new file.
sips -s format bmp image.avif \
--out image.bmpBuilt into macOS and good for scripts. Run sips --formats to see what your macOS version can read and write.
Questions about AVIF and BMP
Does converting AVIF to BMP lose quality?
BMP is lossless, so the image is saved without further loss.
Can I convert many AVIF files at once?
Yes. Select them all in Finder, press ⌥ F and choose BMP. Progress moves to the menu bar, so you can close the panel and keep working.
Where is the BMP file saved?
Next to the original, with the same name and the .bmp extension. The AVIF file isn’t changed. In Settings you can choose a different folder instead.
Can I convert BMP back to AVIF?
Yes, FileFlip converts BMP to AVIF as well.
Are my files uploaded anywhere?
No. FileFlip converts files on your Mac and works with the internet turned off.
Convert a whole folder of images at once
FileFlip also handles video, audio, PDFs, documents and data files. Requires macOS 14 Sonoma or later.
Coming soon for Mac