Compare Icon File and AV1 Image File Format formats — understand the key differences and when to use each
Icon File
ICO (Icon) is a file format used for icons in Microsoft Windows. ICO files can contain multiple sizes and color depths in a single file, typically including 16×16, 32×32, 48×48, and 256×256 pixel variants. The 256×256 size uses PNG compression. ICO is also used for website favicons (favicon.ico) displayed in browser tabs. Converting PNG to ICO is a common task for web developers and software creators.
AV1 Image File Format
AVIF (AV1 Image File Format) is a next-generation image format based on the AV1 video codec. AVIF provides approximately 50% better compression than JPEG and 20% better than WebP at equivalent quality. It supports HDR, wide color gamut, transparency, animation, and lossless compression. AVIF is supported by Chrome, Firefox, Safari, and Edge. While encoding is slower than JPEG or WebP, AVIF produces the smallest file sizes with excellent quality, making it ideal for web performance optimization.
| Feature | ICO | AVIF |
|---|---|---|
| Full Name | Icon File | AV1 Image File Format |
| File Extension | .ico | .avif |
| Category | image | image |
| Free to Convert | ✓ Yes | ✓ Yes |
| Browser Support | ✓ All Browsers | ✓ All Browsers |
| Convert to Each Other | ✓ Yes | ✓ Yes |
或将文件拖放到此处
最大文件大小：2GB