Image Toolkit

Free online image tool

PNG to ICO Converter

Convert PNG images to ICO files for favicons, app icons, and desktop shortcuts.

ICO Preview

Preview appears here

Upload an image to start processing.

What is this tool?

PNG to ICO creates an icon file from a PNG image for favicons, desktop shortcuts, Windows icons, app prototypes, and small branding assets. PNG is easy to design and export from most graphics tools, but some systems still request an ICO file because ICO can store icon-specific image data for older Windows and browser use cases.

This tool is useful when you already have a square PNG logo or symbol and need an ICO version for a website project, test app, local shortcut, or software mockup. For best results, start with a clean square image with enough padding so the icon does not feel cropped at small sizes.

ICO files are used differently from normal photos. Fine text, thin lines, and detailed illustrations may become unreadable when scaled down. Simple shapes, clear contrast, and centered artwork usually produce a better favicon or app icon.

How to use PNG to ICO Converter

Follow these steps to process your image locally in the browser and download the result.

  1. Step 1

    Upload a square PNG image when possible.

  2. Step 2

    Preview the image and check that the symbol is centered.

  3. Step 3

    Convert the PNG to ICO.

  4. Step 4

    Download the generated ICO file.

  5. Step 5

    Test the icon at small sizes before using it on a website or shortcut.

Key features

  • Creates ICO files from PNG source images.
  • Useful for favicons, desktop shortcuts, and app icon assets.
  • Works best with square logos and simple symbols.
  • Keeps your original PNG unchanged.
  • Browser-based conversion with no sign-in.
  • Pairs well with Image Resizer for preparing square icon input.

Supported formats

Input is PNG. Output is ICO for favicon and icon workflows. Start with a square PNG for the most predictable result.

Common use cases

  • Convert an image when a website, app, form, or publishing platform rejects the original format.
  • Create a more compatible copy for clients, classmates, teammates, marketplaces, or support teams.
  • Prepare website assets by choosing a format that fits transparency, compatibility, or performance needs.
  • Keep the original file unchanged while exporting a new version for a specific destination.

Limitations to know

  • Conversion quality depends on how the browser decodes the source image and exports the target format.
  • Transparency may be lost when converting to formats that do not support transparent pixels, such as JPG.
  • Very large images can require more device memory and may process more slowly on phones or older computers.
  • The exported file is a new browser-generated copy, so you should keep your original file if you may need to edit it again.

Privacy note

ImageToolkit is designed to handle this task in your browser whenever the selected file type is supported. The image you choose is processed on your device for preview and export, and ImageToolkit does not require an account or intentionally upload the original image to an ImageToolkit server for these browser-first tools.

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Frequently Asked Questions

What is an ICO file used for?+

ICO files are commonly used for Windows icons, desktop shortcuts, older favicon workflows, and some app icon requirements.

Should my PNG be square?+

Yes. A square PNG usually creates the cleanest icon because icons are commonly displayed in square spaces.

Can I use a transparent PNG?+

Yes. Transparent PNG artwork is often useful for icons, as long as the final shape remains visible at small sizes.

Why does my icon look blurry?+

The source image may be too small or too detailed. Use a larger square PNG with simple artwork and clear contrast.

Can I make a favicon with this?+

Yes. Generate an ICO file and test it in your website favicon setup.