ICO Generator
Convert an image into a valid, downloadable .ico file - the multi-resolution icon format used by favicons and Windows apps.
Upload an image - this tool builds a valid .ico file containing your image, ready to download and use.
For a full modern favicon set (including PNG sizes and HTML tags), see the Favicon Generator - the .ico format specifically is still expected by some legacy browsers and desktop application icon requirements.
What Is an .ico File?
The ICO format is a container that can hold one or more images at different resolutions in a single file - traditionally used for favicon.ico and Windows application/desktop icons.
Why Use This Tool?
While modern browsers accept PNG favicons directly, favicon.ico at the site root is still checked by some browsers/crawlers as a fallback, and some non-browser contexts (older desktop tooling) specifically require the .ico container format.
How to Use It
- Upload an image (ideally square).
- Click Generate.
- Download the resulting .ico file and place it as
favicon.icoat your site's root, or use it wherever an .ico file is required.
Limitations
This generates a valid ICO container embedding your image - for the fullest possible platform coverage (Apple touch icon, PWA icons), pair this with the Favicon Generator's additional PNG sizes and HTML tags.