Can a JPG become a transparent icon?

No. JPG has no alpha channel, so the resulting icon has a solid background. If you need transparency, start from a PNG instead.

Which sizes should I include?

For a website favicon, 16, 32 and 48px covers almost everything. Add 64, 128 or 256px if you also want a crisp desktop or taskbar icon.

Are my photos uploaded anywhere?

No. The conversion runs entirely in your browser using the canvas API, so your JPG never leaves your device.

JPG to ICO Converter

Turn a JPG into a multi-size Windows .ico icon — in your browser.

JPG to ICO — make a Windows icon in your browser

Convert a JPG photo into a Windows .ico icon with several sizes packed into one file. The converter renders your image at each size you choose — 16, 32, 48px and up — and bundles them into a single multi-resolution .ico that Windows and browsers can use everywhere.

Because JPG has no transparency, the icon keeps a solid background. Everything runs locally in your browser — your images are never uploaded.