// 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 JPEG
JPEG uses lossy compression optimised for photographic content. It discards visual information the human eye is unlikely to notice, achieving compression ratios of 10:1 or higher with minimal perceptible quality loss. JPEG does not support transparency — any alpha channel is flattened against a white background.
// WHY CONVERT
Converting ICO to JPEG is useful when you need your image in a format suited for photographs, web images, email attachments, social media uploads, and any scenario where small file size matters more than pixel-perfect accuracy. 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 used for application icons and browser favicons.
What is JPEG?
JPEG is a lossy compressed format universally compatible with all platforms and applications.
Will converting ICO to JPEG lose quality?
Yes. JPEG is lossy, and icons are typically small, so downscaling artifacts may be visible. Transparency is replaced with a white background.
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.