Convert ICO to PNG
Convert ICO images to PNG directly in your browser. Your files are never uploaded.
What to know
An ICO file can contain several icon sizes. Browsers decode only one of them, usually the largest.
ICO is a container that holds several sizes of the same icon at once, used mainly for Windows icons and favicons.
PNG compresses losslessly and keeps full alpha transparency, which makes it the right choice for screenshots, logos and line art — and a poor one for photographs, where it produces far larger files than JPG.
Questions
Are my ICO files uploaded anywhere?
No. The conversion runs inside your browser using the Canvas API. The file is read into memory on your own machine and never sent over the network, which you can confirm by opening your browser's developer tools and watching the network tab stay empty.
Does converting ICO to PNG reduce quality?
PNG is lossless, so nothing is degraded during the conversion itself. Any quality already lost in the original ICO cannot be restored, however.
Is there a file size limit?
There is no limit imposed by the tool, because there is no server to upload to. The practical ceiling is your device's available memory — very large images may be slow on an older phone.