JPEG to ICO Converter

A file ending in .jpeg holds the same JPEG data as one ending in .jpg. The three-letter version dates from the 8.3 file names of MS-DOS, while macOS, Linux and many cameras and phones still write the full four letters. The converter treats both spellings alike; what matters here is the target.

Windows draws every icon on the desktop, in File Explorer and in the Start menu from an .ico container. The format goes back to Windows 1.0 in 1985, and Windows Vista extended it to 256 × 256 px with PNG-compressed images inside. Because one .ico carries several pictures of different sizes, Windows picks a crisp one for a 16 px title bar and another for the Extra large icons view without blurring either.

A shortcut stores only the path to its icon. If you move or delete the .ico later, the shortcut falls back to a generic blank icon, so keep your converted files in a folder such as Documents\Icons before assigning them.

Icons are square and most JPEGs are not: a phone photo is usually 4:3 and a screenshot often 16:9. Crop to a square around the subject, or pad the canvas out to a square in any editor, so you decide what fills the space instead of leaving it to a stretch or an automatic fit. Our guide to cropping an image to a ratio walks through a 1:1 crop.

JPEG has no transparency, so the background and any padding stay a solid square on the desktop. That suits a photo tile, but a logo will sit inside a white or colored box. If the shape should float on your wallpaper, cut it out and save it as PNG first, then use PNG to ICO, which keeps transparent pixels.

Start from at least 256 × 256 px so the largest layer is not upscaled, and keep the subject simple. A full landscape turns into a smudge at 16 px, while a single face, initial or bold shape still reads.