What is Image to ICO Converter?

This tool converts PNG, JPEG, and other image formats into ICO files for website favicons and application icons. You can bundle multiple icon sizes into a single ICO file, so one upload covers everything from browser tabs to desktop shortcuts.

The ICO container holds several bitmap sizes inside one file, so a single favicon.ico can serve a sharp 16-pixel browser tab and a crisp 256-pixel Windows app icon. We resample each size with a high-quality filter and keep transparency, so logos with rounded corners or soft shadows stay clean at small sizes.

How to use

1. Upload your source image — PNG, JPEG, WebP, SVG, GIF, BMP, TIFF, or HEIC all work.
2. Select the icon sizes you need (16x16, 32x32, 48x48, 64x64, 128x128, 256x256) or use all for a complete favicon package.
3. Click Convert to generate your ICO file with all selected sizes bundled, then download it.

When to use

• Generating a favicon.ico for the root of a website or blog.
• Building a Windows shortcut or installer icon from a logo PNG.
• Replacing a low-res favicon that looks blurry on Retina browser tabs.

Result

A web developer uploads their company logo as a 512x512 PNG and selects 16x16, 32x32, and 48x48 sizes to create a standard favicon.ico file for their website.

FAQ

Which sizes do I actually need in a favicon.ico?

For a modern site, 16, 32, and 48 cover browser tabs, taskbar entries, and most pinned-shortcut cases. Add 64 and 256 if Windows users will pin the site to their desktop or you want a sharp Edge jump-list icon.

Why does my logo look fuzzy at 16x16?

Detailed logos lose legibility once shrunk below 32 pixels. Start from a square source at 512 or 1024, drop fine text, and check the 16-pixel preview before downloading. A simplified mark almost always reads better than the full lockup.

Does the ICO file keep transparency from my PNG?

Yes. Each embedded bitmap stores a full 8-bit alpha channel, so PNG transparency carries over. Save your source with a transparent background and the icon will sit cleanly on any browser theme, light or dark.

Can I upload an SVG instead of a PNG?

You can. The SVG is rasterised at each chosen size before being packed into the ICO, which gives sharper results than scaling a single low-res bitmap. Vector input is the best choice when the original artwork is available.

Where should the favicon.ico file go on my server?

Put it at the site root, like yoursite.com/favicon.ico. Browsers fetch this path automatically even without a link tag in the HTML. Adding an explicit link rel icon tag also works and lets you override the location.

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