Online ICO Converter
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What is a ICO file?
ICO is a file format used for icons in Microsoft Windows. It stores one or more small images in different sizes and color depths, allowing Windows to scale icons across different UI components.
ICO files are essential for desktop software and websites (as favicons), and they can include both bitmap and PNG-based images.
How to open ICO files
ICO files can be opened with Windows built-in image viewer, Paint, or advanced tools like IcoFX, GIMP, and Photoshop (with plugins). macOS may require conversion first.
If you need to convert ICO to PNG or JPG, AnyConv makes it simple to do so online in just a few clicks.
Key facts about ICO
- Full name: Icon File
- Extension: .ico
- MIME type: image/x-icon
- Developed by: Microsoft
- Initial release: 1981
Useful links and resources
Convert from ICO
Quickly turn your ICO files into any format you need
Convert to ICO
Easily turn your files into ICO format
🎯 Did You Know?
The icon that crashed Windows
In early versions of Windows, if an ICO file contained too many sizes or color variations, it could actually cause Explorer to slow down or crash. Some pranksters even made oversized ICOs just to freeze a friend’s computer - turning a tiny icon into a big headache.
— Fact picked by Ethan Brooks
❓ Frequently Asked Questions
Answers to common questions about ICO
- Do I need to install software to convert ICO files?No extra software is required. Just upload your ICO files to AnyConv, we’ll convert them on our servers, and you can download the finished file right away.
- Can I use ICO converter on my phone or tablet?Yes, you can convert ICO files on any device - including phones and tablets. AnyConv works perfectly on mobile.
- Is it safe to convert ICO files with AnyConv?Yes, converting ICO files with AnyConv is secure. All files are automatically deleted after conversion and never shared.
- Can I convert multiple ICO files at once?Yes, our converter supports batch processing. You can upload several ICO files and convert them all at once.