Do I need multiple sizes inside the ICO?

An ICO can bundle several sizes (e.g., 16, 32, 48, 64, 128, 256). A 256×256 source works well—browsers downscale as needed.

Is PNG accepted as a favicon?

Modern browsers support PNG favicons, but ICO remains the most widely compatible single-file format, especially for legacy contexts.

Will this work offline?

Yes. Once loaded, the client‑side converter processes images locally and keeps working without network.

How to Convert Images to ICO for Favicon in Seconds

Overview

Favicons are the tiny icons browsers show in tabs and bookmarks. The traditional format is ICO. Here’s how to create a pixel-perfect favicon in seconds.

Steps

Open the converter and add your logo PNG.
Choose ICO (256×256) as the output format.
Click Convert, then download your .ico file.

Tips for best results

Start from a square PNG with generous padding around the logo.
Avoid tiny text; keep shapes bold and simple for small sizes.
Use a transparent background for clean edges.

Integrate in your site

<link rel="icon" href="/favicon.ico" sizes="any">
<!-- Optional modern extras -->
<link rel="icon" type="image/svg+xml" href="/favicon.svg">
<link rel="apple-touch-icon" href="/apple-touch-icon.png">
<link rel="manifest" href="/manifest.webmanifest">

That’s all—your favicon is production-ready.

Try it now

Try the Free Image Converter

FAQ

What size should I upload?

A square 512×512 or 1024×1024 PNG works great; the tool will scale to 256×256 for the ICO while preserving edges.

Can I include multiple sizes inside one ICO?

Yes—ICO supports multiple embedded sizes. A single 256×256 icon is typically sufficient for modern browsers, which downscale cleanly.

Will it work offline?

Yes. After the page loads once, conversions run locally and continue to work without a network connection.

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