PNG to ICO Converter (favicon.ico) - Free Online Tool

A PNG to ICO converter turns a PNG image into an ICO file, which is commonly used as a website favicon (favicon.ico) and for Windows icons. ICO files can contain multiple sizes in one file, so browsers and operating systems can pick the best resolution automatically. This tool generates ICO files locally in your browser, so your image is not uploaded for processing.

1. Upload a PNG: Choose a .png image from your device.
2. Select icon sizes: Include common sizes like 16x16, 32x32, 48x48, and 256x256.
3. Convert and download: Generate your favicon.ico and download it.

• One file, many sizes: An ICO can bundle multiple icon sizes for better results across devices.
• Favicon-ready output: Create a favicon.ico you can drop into a site or project quickly.
• Private conversion: ICO generation happens on your device in the browser.

If you are not sure which sizes to include, start with these:

• 16x16: Classic browser tab favicon. This is the hardest size to design for.
• 32x32: Common for high-DPI tabs and bookmarks.
• 48x48: Used in some Windows views and shortcuts.
• 256x256: Useful for high-resolution contexts and crisp scaling.

In most cases, including 16, 32, 48, and 256 gives a good balance without overthinking it.

Use case 1: Add a favicon to a website

Create favicon.ico from your logo so tabs, bookmarks, and shortcuts show a recognizable icon.

Use case 2: Generate Windows-compatible icons

If you are packaging an app or installer, an ICO with multiple sizes helps Windows display crisp icons in more places.

Use case 3: Test branding quickly

Try several favicon variations and download ICOs to compare how they look at 16x16 and 32x32 before you finalize a design.

Basic example

Input: logo.png (512x512, square)
Sizes: 16, 32, 48, 256
Output: favicon.ico containing multiple icon sizes.

Advanced example (avoid distortion)

Input: wordmark.png (wide rectangle)
Result: Wide images get scaled into a square for ICO sizes, which can look stretched. For best results, start with a square PNG or pad the design on a square canvas before converting.

For many sites, placing favicon.ico at the root of your domain is enough. If you control HTML, you can also add a link tag like:

<link rel="icon" href="/favicon.ico" />

Browsers cache favicons aggressively. If you do not see changes, hard refresh or try in an incognito window.

"Input must be a PNG file"

This converter accepts PNG only. If your source is SVG, convert it first with SVG to PNG.

The icon looks stretched

ICO sizes are square. If your PNG is not square, it will be resized into a square. Create a square version of your icon (with padding) before converting.

The favicon looks blurry in the browser

Tiny icons need simple shapes. Use thicker strokes, higher contrast, and avoid small text. Including 16x16 and 32x32 helps, but the design still needs to work at small sizes.

• Start with a high-resolution square: 256x256 (or larger) is a solid source size for multi-size ICO exports.
• Leave padding: Give the icon breathing room so it reads well at 16x16.
• Resize for consistency: If your source PNG is huge, resize it with the image resizer & compressor before converting.
• Preview at tiny sizes: Zoom out until your icon is about 16 pixels wide. If it is unreadable, simplify shapes and remove small text.
• Test on light and dark backgrounds: Transparent icons can look different depending on the tab or UI theme.

• Convert logo vectors with SVG to PNG before creating an ICO.
• Shrink and standardize source images with the image resizer & compressor.

PNG to ICO conversion runs locally in your browser. Your image is not uploaded to a server for processing. Close the tab after downloading if you are working with private files.