PNG to ICO

Turn a PNG into a Windows ICO icon or website favicon, up to 256×256.

PNG to ICO Converter turns a PNG image into a Windows ICO file, the format browsers expect for favicons and Windows uses for app icons. Output is capped at 256×256, the ICO format maximum.

Drop your PNG file here

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Size up to 100 MB

How do I use PNG to ICO?

1
Drop your PNG file into the box above; a square image works best for icons and favicons.
2
Click Convert to ICO. Your image uploads over an encrypted connection and converts; anything larger than 256×256 is scaled down to the ICO maximum.
3
Click Download ICO once conversion finishes, then upload it as your site's favicon.ico or use it as a Windows icon.

Frequently asked questions

Do I need an account or a subscription?

Universal PDF requires a Pro subscription. One subscription unlocks every tool on the site, cancel anytime.

Why is the output limited to 256×256?

256×256 is the maximum size the ICO format supports, so larger PNGs are scaled down automatically. That's plenty for favicons and Windows icons, since browsers typically display favicons at 16×16 to 32×32.

How do I use the ICO as a favicon?

Upload the file to your site's root as favicon.ico, or reference it with a <link rel="icon" href="/favicon.ico"> tag in your page's head. Browsers cache favicons aggressively, so a hard refresh may be needed to see the new icon.

Does transparency survive the conversion?

Yes. ICO supports alpha transparency, so a PNG with a transparent background converts to an icon that sits cleanly on any browser tab or desktop background. Start from a square PNG to avoid stretching.

Last updated: July 8, 2026