What the converter generates
An ICO file is a container, not a single bitmap. This converter renders your SVG at three common favicon sizes, stores each result as a 32-bit PNG with alpha transparency, and writes a standard ICO directory that points to all three images. Browsers and Windows can choose the closest size without scaling one large icon down.
| Frame | Typical use | Format |
|---|---|---|
| 16×16 | Browser tabs, compact lists | 32-bit PNG |
| 32×32 | Standard favicon display | 32-bit PNG |
| 48×48 | Windows shortcuts | 32-bit PNG |
Use the downloaded ICO
Save the file at your site root, then reference it in the document head. Keeping the conventional/favicon.ico path also covers clients that request it without reading your HTML.
<link rel="icon" href="/favicon.ico" sizes="any">
ICO or inline SVG?
Use ICO when you need broad fallback support, a file for Windows shortcuts, or compatibility with a system that explicitly asks for .ico. For modern browsers, SVG stays sharp at every size and can respond to dark mode. The inline SVG favicon converter generates that version without rasterizing it. Production sites can ship both: ICO first, SVG second.
For the cleanest favicon
- Use a square
viewBox, such as0 0 64 64. - Remove tiny details that disappear at 16×16.
- Keep important shapes away from the outer edge.
- Inline fonts and images; external resources may be blocked by browser canvas security.
