What sizes end up inside the generated ICO?

A standard icon grid — typically 16, 32, and 48 pixels, often with a 256-pixel entry for modern high-DPI contexts. Windows and browsers then pick whichever size fits: 16 for browser tabs, 32 for taskbars, 48 and up for Explorer views.

Will a photograph work as a favicon?

Rarely. At 16 by 16 pixels a photo collapses into unrecognizable noise — that's why real-world favicons are bold, simple marks. Crop the JPG to a square focused on one strong shape or letterform before converting, or the smallest sizes will be mud.

Does the icon get a transparent background?

Not from a JPG source — the format has no alpha channel, so the icon fills its full square with image. If you want a cutout shape floating over tabs and desktops, start from a PNG or WebP with transparency instead.

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Converting a JPG to ICO turns a photo or logo into a Windows icon or website favicon at the standard icon resolutions, ready to drop into a shortcut, app, or site header.

Convert JPG to ICO – Free Online JPG to ICO Converter

Why convert JPG to ICO?

Turn a JPG logo into a favicon.ico for your website.
Make custom desktop or application icons on Windows.
Generate multi-resolution icons from a single source image.

Tip: JPGs have no transparency — for icons that need a transparent background, start from a PNG instead.

How to convert JPG to ICO

Upload your JPG file using the area above.
ICO is preselected as the target format.
Click Start and wait for the conversion to finish.
Download your converted ICO file.

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