// ABOUT PNG
PNG uses lossless compression with full alpha-channel transparency support. It preserves every pixel exactly, making it the standard choice for screenshots, logos, web graphics, and any image where precision matters. PNG files tend to be larger than lossy alternatives but guarantee no quality degradation.
// 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.
// WHY CONVERT
Converting PNG to ICO is useful when you need your image in a format suited for website favicons, Windows desktop application icons, Windows Explorer thumbnails, and shortcut icons. 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 PNG?
PNG is a lossless image format commonly used for web graphics, screenshots, and source artwork.
What is ICO?
ICO is the Windows icon container format, used for favicons, desktop application icons, and Windows Explorer thumbnails. It can embed multiple icon sizes in a single file.
Will converting PNG to ICO lose quality?
Minimal loss. ICO files typically store images at small sizes (16×16, 32×32, 64×64). If your PNG is large, it will be downscaled. For best results use a clean square PNG as the source.
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.