An ICO file is an icon file format used by Microsoft Windows. It's a container that can hold one or more small images at multiple sizes and color depths, allowing the operating system to choose the most appropriate icon for different viewing contexts.

Why would an ICO file contain multiple images?

This is for scalability. An ICO file for a program might contain 16x16, 32x32, 48x48, and 256x256 pixel versions of the icon. Windows uses the smaller sizes for list views and the larger sizes for desktop shortcuts. Our converter will extract all of these for you.

Will transparency be preserved when I convert ICO to PNG?

Yes. The PNG format fully supports alpha channel transparency, just like modern ICO files. Our conversion process is designed to preserve this transparency perfectly.

Is this a favicon to PNG converter?

Yes, this tool is perfect for that. If you have a `favicon.ico` file and need to get the PNG versions out of it (for example, to specify ` ` tags in your HTML), this tool will extract them for you.

Is it safe to use this online ICO to PNG converter?

Yes. All processing is done client-side using JavaScript in your browser. Your ICO file never leaves your computer, making the process secure and private.