How do I reduce size of ICO file?

The . ico file format is required. For Classic Mode, the full set is 16×16, 24×24, 32×32, 48×48 and 64×64. … For high dpi. dpiIcon sizeScale factor19232x322.0 (200%)Icons (Design basics) – Win32 apps | Microsoft Docs docs.microsoft.com › en-us › windows › win32 › uxguide › vis-icons

To resize desktop icons, right-click (or press and hold) the desktop, point to View, then select Large icons, Medium icons, or Small icons .

You can either compress/reduce the filesize of the icon (I recommend using ImageMagick to do this, you can download it here), or you can make the dimensions smaller. However, if you are putting an ico file on a website I recommend using a different image format, such as . png.

To quote:

So, after you create or import a suitable image into Paint and set it to the correct dimensions, creating the ICO file is straightforward. From the Paint menu, choose Save As, and then select JPEG Picture from the menu of file formats that pops up. Next, enter a filename with the . ico extension and save the file.

ICO Convert is a free online icon maker and favicon generator , with it you can make icons from png or jpg images, just upload a photo of yourself, resize and crop it, convert to a shape you like, add borders and shadows, and save it as a PNG image or Windows icon.

How to convert PNG to ICO