How to convert ICO to PNG
- Select Choose files, or drop your .ico files on the box.
- The icon is decoded and saved as a PNG with transparency.
- Select Download, or Download all for a ZIP.
What is an ICO file
ICO is the icon format of Windows and the classic format of website favicons. One file can hold several versions of the same icon, for example 16, 32, 48 and 256 pixels wide, so the system can pick the right size. Many apps cannot open ICO files, and image editors often show only one size.
Which size you get
Your browser reads the icon and uses the largest image inside it. That is the sharpest version, usually 256 by 256 pixels for modern Windows icons and 48 by 48 or 32 by 32 for old favicons. If the icon is small and you need a bigger picture, enlarge it with the image resizer, but remember that enlarging cannot add detail.
Transparency
Icons are almost always transparent around their shape. PNG keeps that transparency, so you can place the result on any background. Do not use a JPG for icons because it turns the transparent area white.
Tips
- Create a full favicon set from one picture with the favicon generator.
- Convert vector logos with SVG to PNG.
- Convert other old formats with BMP to PNG.
- Make the icon bigger or smaller with the image resizer.
Good to know
Icons that contain only small sizes will give a small PNG, so check the pixel size shown after conversion. Some old ICO files store their images in the plain bitmap style instead of PNG, and browsers still read those. A file that is only named .ico but is really another format, such as a renamed JPG, may also open, because the browser looks at the contents. Damaged files show an error instead of an empty picture.
Everything runs on your device. Your icons are never uploaded.