What PNG to ICO conversion does

Convert a PNG image to a Windows ICO icon directly in your browser. Generate a single size, or the default multi-size package covering 16, 32, 48, 64, 128, and 256 px in one .ico file.

How to convert PNG to ICO

1. Choose a PNG file.
2. Pick a single icon size, or leave the default multi-size package selected.
3. Select Convert & download.
4. Save the .ico file from your browser downloads.

Why use this conversion

ICO is the format Windows expects for application icons, desktop shortcuts, and favicons. A single square PNG can be turned into a real, multi-resolution .ico file ready to use.

Transparency and output quality

Each embedded size keeps the source PNG’s alpha channel — this is a real ICO container (ICONDIR plus one entry per size), with each size embedded as genuine PNG-compressed image data, not a PNG file with a renamed extension. Each icon entry uses PNG compression, so a single-size ICO stays small; the multi-size package is larger since it bundles six images.

Privacy and local processing

• Processing occurs locally in the browser.
• Files are not uploaded to Looty Tools for conversion.
• Converted files remain on your device.

Limits and known issues

• Input: PNG (.png) only, up to 25.0 MB and 8,192 px per side.
• Each icon size is generated by resizing the full image to a square canvas, so a non-square source will be stretched to fit. For best results, start from a square PNG.
• Metadata is not preserved in the downloaded file.

Related tools

• PNG to AnyConvert PNG images into multiple common output formats.
• PNG to PDFConvert a PNG image into a single-page PDF.
• PNG to SVGEmbed a PNG image inside a scalable SVG container.

PNG to ICO FAQ

Why convert PNG to ICO?

ICO is the format Windows expects for application icons, desktop shortcuts, and favicons. A single PNG can be turned into a real, multi-resolution .ico file.

Can I generate a multi-size ICO?

Yes, and it is the default. The multi-size package bundles 16, 32, 48, 64, 128, and 256 px versions of the same image in one .ico file. You can also pick a single size from the dropdown.

Is this a real ICO file, or a renamed PNG?

It is a real ICO container (ICONDIR + one entry per size), with each size embedded as genuine PNG-compressed image data — not a PNG file with a changed extension.

Does ICO output keep transparency?

Yes. Each embedded size keeps the source PNG’s alpha channel.

What happens if my image isn’t square?

Each icon size is generated by resizing the full image to a square canvas, so a non-square source will be stretched to fit. For best results, start from a square PNG.

Are my files uploaded?

No. Conversion runs locally in your browser and does not upload your file to Looty Tools servers.