Upload any .ico file to inspect its layers, dimensions, bit depth, transparency, and platform compatibility. Download individual layers as PNG or export them all at once. Need to create icons? Try our PNG to ICO Converter or Favicon Generator.
ICO files contain multiple images at different sizes. Windows automatically selects the best size for each context - taskbar, desktop, file explorer, and more. Use our Favicon Generator to create icons with all the right sizes.
Modern ICO files can use PNG compression for larger sizes (48px+), reducing file size significantly while maintaining quality. If you need to convert PNG to ICO, our converter handles this automatically.
32-bit icons support full alpha transparency, allowing smooth edges and shadows that blend with any background. For icons without transparency, consider editing them in our Image Editor before converting.
Browser tabs, small taskbar icons, and context menus. Essential for web favicons.
Windows taskbar, desktop shortcuts, and standard displays.
Windows desktop icons and larger UI elements.
Windows Vista+ high-DPI displays and large icon views. Use PNG format for this size.
Pro tip: Use our Favicon Generator to create ICO files with all recommended sizes automatically. You can also resize existing icons to add missing sizes.
ICO is a container format that stores multiple images at different sizes and color depths. It is the standard icon format for Windows applications and web favicons. You can create ICO files from PNG images using our converter.
Windows and browsers display icons at different sizes depending on context. Having multiple sizes ensures your icon looks crisp everywhere - from tiny browser tabs to large desktop views. Our Favicon Generator creates all necessary sizes automatically.
The quality score evaluates your ICO based on size coverage, format efficiency, transparency support, and overall file optimization. Higher scores indicate better compatibility across Windows versions and web browsers.
Yes! After analyzing your ICO file, you can download any individual layer as a PNG file. If the icon contains 3 or more layers, you can also download all layers at once as a ZIP archive. For full batch conversion, try our ICO to PNG tool.
BMP (bitmap) is the traditional format for ICO layers, while PNG is a compressed alternative supported since Windows Vista. PNG layers are significantly smaller in file size while maintaining the same quality. Best practice is to use BMP for sizes 32px and below, and PNG for larger sizes like 48px, 128px, and 256px.
A favicon is simply an ICO file placed in your website root as favicon.ico. Use our Favicon Generator to create one from any image, or convert a PNG to ICO. The minimum required sizes are 16x16 and 32x32 pixels. After creating your favicon, use the Favicon Checker to verify it works correctly on your site.
Yes, all uploaded files are automatically deleted from our servers within one hour. We do not store, share, or analyze your files beyond providing the analysis results you see on screen.