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ICO File Features
Windows Compatible
ICO is the standard format for Windows application icons and favicons
Web Favicons
Required format for browser favicons that work across all devices
Multiple Resolutions
Single ICO file can contain multiple sizes for different display needs
Privacy Focused
All conversions happen in your browser - your images never leave your device
About ICO Files
ICO (Icon) files are used primarily for application icons in Windows and favicons in web browsers. Unlike standard image formats, ICO files can contain multiple images at different resolutions (typically 16x16, 32x32, 48x48, and 256x256 pixels).
For best results, start with a high-resolution PNG (at least 256x256 pixels) and let the converter create all necessary sizes.