Build one .ico that contains every size you tick. Each size is rendered separately from the vector, so small icons stay crisp.
Loading the SVG to ICO tool…
Processed on your device. Files are never uploaded.
Drop or paste an SVG (a square viewBox works best).
Tick the sizes to include. 16, 32 and 48 cover favicon.ico; add 256 for Windows app icons.
Download the .ico.
An .ico is a small container that holds several images of different sizes. The operating system or browser picks the closest one. SVGShift renders each size straight from your vector and stores it as PNG inside the ICO, which Windows Vista and later, and all modern browsers, understand.
16×16, 32×32 and 48×48. Browsers use 16 and 32 in tabs and bookmarks; Windows uses 48 for shortcuts.
It will be centred on a transparent square canvas so it is not stretched.
Most browsers accept an SVG favicon, but some tools, crawlers and older browsers request /favicon.ico directly. A small ICO alongside your SVG is still best practice; the favicon generator builds the full set.