Convert PNG to ICO Online

Free and fast PNG to ICO converter for favicons and desktop icons. Works instantly on any device, no signup required.

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No files selected. Click "Choose Files" above to select images.

Why Convert PNG to ICO?

ICO is built for icons:

  • Multi-size support: Bundle 16–256 px variants in one file.
  • Favicon standard: Recognized by major browsers.
  • Windows compatibility: Native desktop/app icon format.
  • Transparency: Smooth edges with PNG alpha preserved.

How to Convert PNG to ICO Online

  1. Click Upload PNG and select your image.
  2. Wait for processing and optimization.
  3. Click Download ICO to save your icon.

We generate common icon sizes automatically.

ICO Format Specifications

  • Standard sizes: 16×16, 32×32, 48×48, 64×64, 128×128, 256×256 px
  • Color depth: Up to 32-bit RGBA
  • Transparency: Full alpha channel
  • Structure: Header + multiple image entries
  • Compression: PNG-compressed entries for 32-bit icons (Vista+)

Supported Limits & Formats

  • Accepted input: PNG (image/png)
  • Maximum file size: up to 16 MB per file
  • Output: ICO (.ico, MIME image/x-icon)

Troubleshooting

  • Favicon not showing: Clear cache and ensure /favicon.ico at site root with <link rel="icon" href="/favicon.ico">.
  • Jagged edges: Start from a larger, high-contrast PNG; downscale cleanly.
  • Upload fails: Make sure PNG ≤ 16 MB.

Features of Our PNG to ICO Converter

  • 100% Free with no watermarks
  • Automatic size optimization
  • Transparency preservation
  • Secure processing

  • Yes, the converter is completely free with no hidden charges or subscriptions.
  • Common sizes include 16×16, 32×32, 48×48, 64×64, 128×128, and 256×256 pixels.
  • Yes. <code>favicon.ico</code> is widely supported by major browsers.
  • You can upload images up to 16&nbsp;MB per file.
  • Files are processed automatically and not retained longer than necessary for conversion.
  • We preserve PNG transparency and generate multiple sizes for crisp rendering at small dimensions.

For best results, use a clear, high-contrast PNG. Place /favicon.ico at your site root and reference it with <link rel="icon" href="/favicon.ico">.