Image to ICO Converter — Convert PNG or JPG to .ico Icon File

Image to ICO converts your PNG or JPG file into a proper .ico icon file that Windows applications, websites, and software installers expect. Unlike a renamed PNG, a true .ico file can contain multiple image sizes in one file, ensuring your icon looks crisp at every size from 16x16 to 256x256.

Why use this Image to ICO?

  • Creates multi-size .ico files containing 16x16, 32x32, 48x48, and 256x256 in one file
  • Accepts PNG, JPG, and WebP source images
  • Preserves transparency from PNG source images in the output .ico
  • Compatible with Windows application icons, installer icons, and website favicons

How to use the Image to ICO

  1. Upload your source image: Select a PNG, JPG, or WebP image you want to convert to an ICO file — a square image works best.
  2. Choose included sizes: Select which icon sizes to bundle in the .ico file (16px, 32px, 48px, 256px are the standard set).
  3. Convert to ICO: Click Convert and the tool generates a proper multi-size .ico file from your image.
  4. Download the .ico file: Download the resulting .ico file and use it in your website root, Windows app, or software project.

Frequently Asked Questions

What is the difference between a .ico file and a renamed .png?

A genuine .ico file is a container that can hold multiple image sizes (16x16, 32x32, 48x48, 256x256) in a single file. Windows and browsers pick the appropriate size automatically. A renamed PNG is only one size and will look blurry or incorrectly scaled in contexts that expect a different size.

Why does my Windows app icon look blurry?

This usually happens because the .ico file only contains one size and Windows is scaling it up or down. A properly generated .ico with multiple embedded sizes will render sharply in the taskbar, desktop, Start menu, and Explorer at every zoom level.

What is the best source image size to use?

Start with at least a 256x256 pixel PNG for the best results. The tool downscales it cleanly to the smaller sizes. If you use a very small source image, the larger sizes in the .ico will appear blurry because they'll be upscaled.

Does the ICO conversion preserve transparency from my PNG?

Yes. If your source PNG has a transparent background, the transparency is preserved in the .ico output. This is essential for application icons, where the icon shape needs to sit on top of different background colors without a white box.

Can I use this tool to create a website favicon?

Yes. A favicon.ico placed in your website's root directory is the format browsers have used for decades. For a complete modern favicon set (including Apple Touch Icon PNG sizes), consider also using the Favicon Generator tool which outputs the full range.

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