Convert PNG to ICO — Free Favicon Generator
Convert PNG images to ICO favicon format free. Create Windows icons and website favicons with multi-size support. No software needed.
Conversion settings — add a file to adjust
About PNG files
ICO is the icon format used by Windows and by website favicons. One ICO file can hold several sizes of the same icon, so the system can pick the best one for each place.
People convert a PNG logo to ICO to make a favicon for a website or an icon for a Windows program or shortcut.
How we convert PNG to ICO
- Sizes
- Every ICO we make holds three images: 16 by 16, 32 by 32 and 48 by 48 pixels.
- Shape
- The image is scaled to fit each size with its shape kept. Empty space is filled with transparent pixels, not stretched.
- Transparency
- The transparent areas of the PNG stay transparent in the icon.
Common problems and fixes
The icon looks blurry at 16 by 16.
Fine detail disappears at small sizes. Use a simple, bold version of your logo for the favicon.
A wide logo looks tiny in the icon.
We keep the shape and pad the rest with transparency. Crop the PNG to a square around the main mark first.
The browser still shows the old favicon.
Browsers cache favicons for a long time. Clear the cache or open the site in a private window to check.
About PNG to ICO Conversion
PNG to ICO conversion creates Windows icon files and website favicons from standard PNG images. The ICO format is a Microsoft container that bundles multiple image sizes into a single file — typically 16x16, 32x32, 48x48, and 256x256 pixels — allowing Windows and web browsers to select the most appropriate resolution for each display context. Every website needs a favicon in ICO format for compatibility with older browsers, and Windows applications require ICO files for taskbar, desktop, and Start menu icons.
Our PNG to ICO converter resizes your source PNG to 16x16, 32x32 and 48x48 pixels and packages all three into one ICO file, with transparent padding to keep the aspect ratio. The process preserves alpha transparency, which is essential for icons that need to blend seamlessly over any desktop wallpaper or browser tab background. Upload a single high-resolution PNG and receive a multi-resolution ICO file ready for deployment.
While modern browsers accept PNG favicons directly, the ICO format remains necessary for Internet Explorer compatibility, Windows shortcut icons, and older bookmark systems. ICO's multi-resolution bundling also provides a practical advantage — one file serves every size context, from tiny 16x16 tab icons to 48x48 desktop list icons, with each size resized separately.
Why Convert PNG to ICO?
Website favicons are one of the most visible branding elements on the web — they appear in browser tabs, bookmarks, history lists, and mobile home screens. While modern browsers accept PNG and SVG favicons, the ICO format provides maximum compatibility across all browsers including legacy Internet Explorer versions that still account for meaningful traffic in enterprise and government environments.
Windows applications and shortcuts require ICO format for their icons. If you are developing a Windows desktop application, creating a custom shortcut, or building an installer package, ICO is the mandatory format. Windows Explorer reads ICO files for folder icons, file type associations, and Start menu entries. No other image format serves this purpose.