Convert PNG to ICO Free Online

Convert your PNG images to ICO format instantly, for free. Client-side processing ensures your images never leave your device. Fast, secure, and easy to use.

Drop your PNG images here or click to upload

Why convert PNG to ICO?

ICO files are used for favicons and application icons. Converting PNG to ICO creates multi-resolution icon files that work universally across browsers and operating systems. ICO supports transparency and can bundle multiple sizes (16×16, 32×32, etc.) in one file, making it essential for website favicons and desktop application icons.

Format Comparison

PropertyPNGICO
CompressionLosslessVarious (PNG or BMP inside)
Transparency
Animation
Browser SupportUniversal (100%)Universal (100%)
File SizeMedium to LargeVery Small (16x16 to 256x256)
Best ForGraphics, logos, screenshotsFavicons and application icons

About PNG

Portable Network Graphics

.png

Advantages

  • Lossless compression preserves quality
  • Full transparency support (alpha channel)
  • Excellent for text and sharp edges
  • Universal browser support

Disadvantages

  • Larger file sizes than lossy formats
  • Not ideal for photographs
  • No animation support
  • Can be bandwidth-intensive for web use

About ICO

Icon file format

.ico

Advantages

  • Can contain multiple sizes in one file
  • Universal support for favicons
  • Transparency support
  • Optimized for small dimensions

Disadvantages

  • Not suitable for regular images
  • Limited to small sizes
  • Complex multi-resolution format
  • Better alternatives exist (SVG for scalability)