ICO Generator - Multi-Size Icon Maker Online
Create ICO-compatible icons in multiple sizes from any image. Generate PNG icons for Windows, macOS, and web favicons.
What is an ICO File?
ICO (Windows Icon) is a file format that contains multiple icon sizes in a single file. Windows uses ICO files for application icons, folder icons, and shortcuts. The format can store multiple resolutions so the OS displays the appropriate size.
Standard Icon Sizes
- 16×16: Small icons, taskbar
- 24×24: Toolbars
- 32×32: Desktop icons (standard DPI)
- 48×48: Explorer tiles
- 64×64: Large icons
- 128×128 / 256×256: High DPI displays
ICO vs PNG
- ICO: Multi-resolution, Windows-specific, required for .exe icons.
- PNG: Single size, web standard, modern favicon support.
- SVG: Scalable, smallest file, limited browser support for favicons.
Using Icons
Windows Application: Embed in .exe or .dll resources.
Website: Use PNG favicons with multiple link tags:
<link rel="icon" sizes="32x32" href="/icon-32.png"> <link rel="icon" sizes="16x16" href="/icon-16.png">
Best Practices
- Start with a high-resolution source (512px or larger).
- Use simple designs that work at small sizes.
- Include at least 16, 32, and 48px sizes.
- Test icons on different backgrounds.