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Convert a JPG into a multi-size Windows .ico icon and choose which sizes to include. Free, in your browser, nothing is uploaded.
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A quick way to understand who this helps, what it solves, and where it connects next.
Developers building Windows or favicon icons.
Using the ico converter without installing anything or signing up.
Capture ico-converter intent with a fast, browser-side tool that runs 100% locally.
Cleanor Labs
These sections explain the job in plain language and set expectations for what the tool should do well.
This ICO converter builds a genuine multi-size Windows .ico file from a PNG or JPG image. Pick any combination of 16, 32, 48, 64, 128, and 256 pixel sizes, and the tool renders each one and packs them into a single icon whose ICO header is verified before you download. It uses a dependency-free encoder that embeds PNG data in the ICO container, and it runs entirely in your browser so nothing is uploaded.
Short answers for the questions people usually have before trying a utility like this.
For a favicon or app icon, 16, 32, 48, and 256 pixels covers almost every use. You can toggle any combination on or off.
Yes. The tool writes a standard ICONDIR and ICONDIRENTRY structure with PNG-encoded images and verifies the header bytes before download.
No. The icon is generated locally in your browser and your image never leaves your device.
Every tool on Cleanor is free with no sign-up, no credits, and no limits. Files are processed privately in your browser. Looking for on-device phone cleanup and Premium features? That lives in the Cleanor app.
Upload a PNG or JPG, choose the icon sizes to include, and download a multi-size Windows .ico file, entirely in your browser. Nothing is uploaded to a server.
Pick a square image for the sharpest icon at every size.
The ICO is packed with PNG-encoded images and its header is verified before download. Your image never leaves your device.