Images
ICO files
The icon format of Windows, also used for website favicons. One ICO file can hold several sizes, up to 256 × 256 pixels.
- Full name
- Windows icon
- Made by
- Microsoft
- File extension
- .ico
- Compression
- Bitmap or PNG inside
- Transparency
- Yes
- Best for
- Windows icons and website favicons
- Opens in
- Windows, web browsers and most image editors
- In FileFlip
- Opens and saves
Good at
- Several sizes in one file
- Recognised by every browser as a favicon
Not so good at
- Images are at most 256 × 256 pixels
ICO in FileFlip
FileFlip opens ICO files and saves to ICO.
Convert ICO to
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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