// ABOUT ICO
ICO is the standard Windows icon container format used for favicons and application icons. A single ICO file can embed multiple resolutions (16x16, 32x32, 48x48, 256x256) so the operating system or browser can select the most appropriate size. ICO is the required format for the classic favicon.ico file that browsers request from every website.
// ABOUT WebP
WebP is a modern image format developed by Google that supports both lossy and lossless compression, as well as transparency and animation. Lossless WebP files are typically 25–35% smaller than equivalent PNGs, while lossy WebP achieves similar quality to JPEG at 25–34% smaller file sizes. All major browsers have supported WebP since 2020.
// WHY CONVERT
Converting ICO to WebP is useful when you need your image in a format suited for web optimisation, responsive images, progressive web apps, and any context where smaller files improve page load times. Image Toolz runs the entire conversion directly in your browser. Nothing is uploaded to any server — your files remain completely private on your device. The tool handles images up to 200 MB and most conversions complete in under a second.
// FAQ
What is ICO?
ICO is the Windows icon container format embedding images for use as application icons and favicons.
What is WebP?
WebP is a modern format by Google supporting both lossless and lossy compression, widely supported in browsers.
Will converting ICO to WebP lose quality?
Not with lossless WebP. With lossy WebP there is minimal compression artifact for icon-sized imagery.
Is it safe to convert my files here?
Yes. All conversion runs entirely in your browser. Your images are never uploaded to any server and nothing leaves your device.