ImgWrench's ICO converter turns a PNG, JPG, WebP or GIF into a Windows .ico file that holds every size you pick, from 16 to 256 pixels. Microsoft's recommended minimum set is ready to go, and small sizes get light sharpening so they stay crisp.
How to convert an image to ICO
- Drop one or more images into the tool above.
- Keep the default sizes, or tick the ones you need.
- If an image isn't square, choose Contain to keep it whole or Cover to fill the square.
- Download each .ico, or all of them as a ZIP.
Which sizes to include
Windows looks for an exact size first and scales the next size down when there isn't one. At 100% display scaling, title bars and the system tray use 16px, the taskbar uses 24px and Start pins use 32px; at higher scaling every size grows. That's why Microsoft recommends at least 16, 24, 32, 48 and 256.
Tips for sharp icons
- Start big. A source of 256px or more gives every size enough detail.
- Simplify for 16px. Fine lines and small text disappear at the smallest sizes; bold shapes survive.
- Use a transparent background. Microsoft notes icons look best on transparent backgrounds.
Why ImgWrench
- Every size Windows uses. Pick any of the 14 sizes Microsoft lists.
- Batch conversion. Up to 20 images at once, each to its own .ico.
- Private by design. Your images never leave your device.