Images
Turn your ICO files into WebP in seconds. Everything happens in your browser: nothing is uploaded to any server.
Drag your files here
Or paste them with Ctrl+V. They never leave your device.
It is only meant for icons, not for large photos. As WebP it is much lighter, ideal for a fast website.
ICO is the container for Windows icons and website favicons, holding several sizes in one file.
Strengths: A single ICO carries the icon at 16, 32, 48 and 256 pixels so it looks sharp everywhere.
Limits: It is only meant for icons, not for large photos.
WebP is a Google format designed for the web, with lossy or lossless compression and transparency.
Strengths: It is noticeably smaller than JPG and PNG at similar quality, so pages load faster.
Limits: Some editing apps, older viewers and upload forms still do not accept it.
No. The ICO to WebP conversion runs entirely in your browser, with code downloaded from this site and executed on your device. You can check it in the Network tab of the developer tools or by going offline after the page loads.
A little: WebP uses lossy compression. At the default quality the difference is not visible to the naked eye, and you can raise it in the options for maximum quality.
Your device’s memory sets the limit: on desktop, images up to about 100 megapixels; on mobile, up to 16.7. If an image is too large you are told before it starts.
Yes. Drop as many ICO files as you like: several are converted at the same time, depending on your processor cores, and when they finish you can download each WebP or all of them in a ZIP.