Tooooolbox
100% private — no upload
Need a favicon.ico for your website? Drop a PNG, JPG or WebP below and download a real multi-resolution .ico file containing the 16, 32, 48 and 256px sizes browsers expect. Everything runs in your browser — your image is never uploaded.
PNG, JPG, GIF, WebP, HEIC up to 50MB per file
Choose filesICO is Windows' icon container, and the thing that distinguishes it from an ordinary image is that a single .ico holds several resolutions at once. The operating system or browser then picks whichever size fits the context — 16px for a browser tab, 32px for a desktop shortcut, 48px in File Explorer, 256px for large icon views.
That is why a proper favicon.ico is not simply a small PNG renamed. Bundling the sizes means each one can be rendered from source rather than scaled down on the fly, which is the difference between a crisp tab icon and a blurry one.
Sixteen pixels square is roughly the size of a full stop on this page, and it is unforgiving. Detailed logos, thin lettering and subtle gradients all dissolve into mush at that scale. What survives is a single strong shape with high contrast against its background — which is why so many recognisable favicons are one letter, one symbol, or one bold silhouette.
Start from a square source image with a transparent background for the cleanest result. Non-square images are scaled and centred onto a transparent canvas, which usually leaves more empty space than you want. If your full logo is horizontal, it is normally better to take just its symbol or initial rather than shrinking the whole thing.
The .ico format is the classic Windows icon format and the standard for website favicons (favicon.ico). A single .ico can store several resolutions, so browsers and Windows can pick the right one for tabs, bookmarks, the taskbar or the desktop.
A good favicon.ico bundles multiple sizes — typically 16×16, 32×32, 48×48 and 256×256. This tool generates all of them in one file automatically, so it looks crisp everywhere from a browser tab to a Windows shortcut.
Start from a square PNG with a transparent background for the cleanest result. Non-square images are scaled to fit and centered on a transparent canvas. Simple, high-contrast logos read best at tiny 16px sizes.
No. The conversion to .ico happens entirely in your browser using the canvas API. Your file never leaves your device — no upload, no account, no limits.