Convert Windows ICO icons to WebP format. ICO is a legacy format best for desktop applications. WebP is the modern web standard — smaller, faster, and universally supported. All conversion happens in your browser.
ICO files were designed for Windows icons and favicons — tiny, multi-resolution containers. But sometimes you need that icon as a standard image format for documentation, presentations, or design mockups. WebP gives you excellent quality at minimal file size. This converter extracts the best resolution from your ICO file and outputs a clean WebP.
What is ICO Format?
ICO (Icon) is Microsoft's image format for Windows icons and website favicons. It's been around since Windows 1.0 in 1985.
ICO files can contain multiple image sizes (16x16, 32x32, 48x48, 256x256) in a single file, allowing Windows to display the appropriate size.
While ICO works great for Windows, WebP is better optimized for the web with smaller file sizes and broader browser support.
Why Convert ICO to WebP?
Smaller File Sizes
WebP compression is far more efficient than ICO. Convert your icons to WebP for faster loading web pages and reduced bandwidth.
Web-Optimized Format
ICO is a legacy Windows format. WebP is the modern standard for web images, supported by all major browsers and optimized for performance.
Transparency Preserved
WebP supports alpha transparency just like ICO. Your icons with transparent backgrounds will convert perfectly.
Private & Secure
All conversion happens locally in your browser. Your icons never leave your device — we don't upload or store anything.
How to Convert ICO to WebP
- Upload your .ico file(s).
- Adjust quality and size settings.
- Click Convert.
- Download your WebP icon(s).
Features
All icon sizes and depths
Alpha channel preserved
Adjust WebP compression
Convert multiple icons
Change dimensions
Get all files at once
ICO vs WebP Comparison
| Feature | ICO | WebP |
|---|---|---|
| File Size | Larger | Smaller ✓ |
| Web Support | Favicon only | Universal ✓ |
| Transparency | Yes ✓ | Yes ✓ |
| Multi-size | Yes ✓ | No (single) |
Who Uses This Tool?
Web Developers
Convert legacy icons for modern websites
Icon Designers
Export icons to web-ready format
App Developers
Prepare icons for web applications
Content Managers
Update old icon assets to WebP