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

How to convert BMP to GIF with FileFlip
Select the BMP 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 BMP. Type “GIF” to jump to it.
Choose GIF and press Return
The GIF files appear next to the originals with the same names. The BMP files stay as they are.
BMP and GIF
BMP files are uncompressed and take far more space than they need to. GIF animations play everywhere, from chat apps to old email clients.
What changes when you convert
- Both formats are lossless, so the image itself doesn’t change. Only file size and compatibility do.
- GIF is limited to 256 colors, so photos can look grainy or banded.
| Property | BMP | GIF |
|---|---|---|
| Full name | Bitmap image | Graphics Interchange Format |
| Made by | Microsoft | CompuServe |
| Compression | Usually uncompressed | Lossless, up to 256 colors |
| Best for | Older software that requires it | Short animations and simple graphics |
| Opens in | Windows and most image editors | Everywhere, including browsers and chat apps |
| File extension | .bmp | .gif |
| 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 BMP in Preview, choose File → Export, pick GIF from the Format menu and click Save. If GIF 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 gif image.bmp \
--out image.gifBuilt into macOS and good for scripts. Run sips --formats to see what your macOS version can read and write.
Questions about BMP and GIF
Does converting BMP to GIF lose quality?
Both formats are lossless, so the image itself doesn’t change. Only file size and compatibility do.
Can I convert many BMP files at once?
Yes. Select them all in Finder, press ⌥ F and choose GIF. Progress moves to the menu bar, so you can close the panel and keep working.
Where is the GIF file saved?
Next to the original, with the same name and the .gif extension. The BMP file isn’t changed. In Settings you can choose a different folder instead.
Can I convert GIF back to BMP?
Yes, FileFlip converts GIF to BMP 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