Convert GIF to ICO — Free Online Converter

ICO is the Windows icon file format, capable of storing multiple image sizes (16x16, 32x32, 48x48, 256x256) within a single container. Converting a GIF to ICO transforms your graphic into a proper Windows icon that can be used for application executables, desktop shortcuts, website favicons, and Windows shell customization. The conversion resizes your GIF to standard icon dimensions and embeds multiple sizes for crisp display across different Windows UI contexts.

GIF's 256-color palette and simple graphics make it a surprisingly good source for icon creation. Many simple logos, pixel art sprites, and symbolic graphics originally created as GIFs translate well to the small icon canvas. The conversion handles the color palette mapping, transparency extraction (GIF's 1-bit transparency maps to ICO's transparency mask), and multi-size embedding automatically.

Windows requires ICO format for application icons, taskbar pins, and Start Menu entries. If you have a logo or graphic in GIF format and need to brand a Windows executable, create a desktop shortcut icon, or generate a favicon for a website, ICO is the required format. No amount of renaming or embedding a GIF will satisfy Windows' icon loading code — the file must be a genuine ICO with the proper header structure and embedded bitmap or PNG data.

Favicons for websites historically used ICO format because Internet Explorer exclusively supported it. While modern browsers accept PNG and SVG favicons, ICO remains the safest choice for maximum browser compatibility, including older IE versions still used in corporate environments. An ICO favicon with embedded 16x16 and 32x32 sizes covers both the browser tab icon and the bookmark/favorites icon.