What is an ICO file?

An ICO file is a container format for storing icons in Microsoft Windows. It can contain multiple images at different sizes and color depths, making it ideal for favicons, application icons, and system icons. ICO files are particularly important for websites because browsers use them to display favicons in browser tabs, bookmarks, and address bars.

Tool description

A free PNG to ICO converter that transforms PNG, JPG, and other image formats into ICO format for favicons and application icons. This browser-based tool allows you to convert image files to ICO format with customizable sizes (16x16 to 256x256 pixels), making it perfect for creating website favicons and application icons. Convert your images to ICO format instantly with high quality.

Features

  • Multiple Format Support: Convert PNG, JPG, JPEG, WebP, GIF, and BMP to ICO
  • Multiple Size Options: Convert images to ICO in sizes from 16x16 to 256x256 pixels
  • Custom Dimensions: Set custom width and height for non-square icons
  • High Quality: Maintains image quality during conversion
  • Image Preview: Preview the converted ICO before downloading
  • Filename Options: Keep original filename or generate a timestamped filename
  • Instant Processing: Real-time conversion with immediate preview
  • Browser-based: No server upload required - all processing happens locally

Use Cases

  • Website Favicons: Create favicon.ico files for your website from PNG or JPG images
  • Application Icons: Convert images to ICO format for Windows applications
  • Bookmarks: Generate high-quality icons for browser bookmarks
  • Desktop Shortcuts: Create custom icons for Windows desktop shortcuts
  • Browser Extensions: Generate icons for browser extension development
  • Logo Conversion: Convert company logos from common image formats to ICO