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File Format Guide

ICO

ICO is a file format for computer icons in Microsoft Windows. It can contain multiple images at different sizes and color depths within a single file, allowing icons to scale appropriately.

Developer

Microsoft

Popularity

Transparency

Yes ✅

Compression

None or PNG

Pros

  • Multi-resolution support
  • Native Windows favicon format

Cons

  • Obsolete for general image use
  • Inefficient compression

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