Convert BMP to ICO on Mac
Convert BMP files to ICO format on your Mac with Jollycat. Uncompressed raster image format. Simple and lossless but produces very large files. Legacy Windows format. All processing runs locally on your Mac — no cloud processing and no uploads required for conversion.
BMP vs ICO
| Property | BMP | ICO |
|---|---|---|
| Type | lossless | lossless |
| Compression | Uncompressed or RLE | PNG or BMP embedded |
| Transparency | No | Yes |
| Animation | No | No |
| Bit Depth | 1/4/8/24/32-bit | 8/32-bit |
| File Extension | .bmp | .ico |
| Key Advantage | No compression artifacts | Multiple sizes in one file |
How to Convert BMP to ICO on Mac
Open your BMP file
Drag and drop your .bmp file onto the Jollycat icon in your macOS dock or menu bar. Jollycat instantly detects the format.
Select ICO format
Pick ICO from the list of output formats. Optionally adjust quality, resolution, or compression settings.
Convert and save
Click Convert and Jollycat processes the file instantly on your Mac. No uploads required, no waiting — everything runs locally on Apple Silicon.
When to Convert BMP to ICO
ICO advantages
Multiple sizes in one file. Windows standard.
BMP limitations
Extremely large files. No transparency in common usage.
Common use cases
Windows app icons, Website favicons, Desktop shortcuts.
BMP to ICO Conversion Tips
ICO supports transparency. If your source image has a solid background, you can remove it with an image editor before converting.
ICO files contain multiple PNG or BMP images at different sizes, allowing the OS to select the appropriate size.
Frequently Asked Questions
Is the BMP to ICO conversion free?
Jollycat is a one-time purchase for $9.99. Once purchased, you can convert BMP to ICO and use all 1,650+ conversion paths with no limits.
Does converting BMP to ICO require an internet connection?
No. Jollycat processes everything locally on your Mac. Your BMP files never leave your device — all conversion happens offline using Apple Silicon.
Can I batch convert multiple BMP files to ICO?
Yes. Drag multiple BMP files onto Jollycat and convert them all to ICO at once. Batch processing is built in.
Ready to Convert BMP to ICO?
Jollycat handles BMP to ICO conversion and 1,650+ other format conversions. All offline on your Mac.
Get Jollycat for Mac