What sizes should I check for a website favicon?

At a minimum, you should include 16x16 and 32x32. We also recommend 48x48 for Windows desktop shortcuts. If you want high-res support, 128x128 or 256x256 can be useful, though usually, a separate PNG is better for those larger sizes.

Is the conversion private?

Yes. All image processing and .ico file generation happen locally in your browser. We do not upload your images to any server.

Image to ICO Converter

Convert JPG, PNG, or WebP images to .ico format online. Create multi-size favicons (16x16, 32x32, 48x48) in a single file for websites. Free, fast, and 100% private.

Click to select an image

Supports PNG, JPG, WebP, SVG (drag & drop)

Why Use Our Favicon Generator?

📦 All-in-One File

Create a single .ico file that packs multiple sizes (16px, 32px, 48px). No need to manage separate files for basic browser compatibility.

✨ Sharp Scaling

We use high-quality resampling algorithms (Lanczos3) so your 16x16 icon looks crisp, not blurry, even when downscaled from a large logo.

🔒 100% Private

Process confidential brand assets safely. Your images are converted directly on your device and never sent to our servers.

Understanding the .ICO Format

Unlike standard image formats like JPEG or PNG which store a single image, the ICO format is a special container. It allows you to store multiple images of different dimensions and color depths inside a single file.

This is why when you download your result, you get one file. However, that file is smart!

16x16 pixel: Used in browser tabs, address bars, and standard bookmarks.
32x32 pixel: Used in Windows taskbar shortcuts, high-DPI (Retina) browser tabs, and "New Tab" pages.
48x48 pixel: Used for Windows desktop icons.

By selecting multiple sizes in our tool, you ensure your website looks professional everywhere, preventing the browser from automatically (and poorly) resizing a large image to fit a tiny space.

Favicon Best Practices for 2025

While the classic favicon.ico is still essential for legacy compatibility, modern websites should use a combination of formats. Here is a robust strategy:

Generate a .ico file using this tool with sizes 16, 32, and 48. Place it in your root directory as favicon.ico. This covers legacy browsers.
Use SVG for modern browsers. If you have a vector logo, use it! It scales infinitely.
Use PNG for Apple Touch Icon. Create a 180x180 PNG (you can use our App Icon Generator for this) for iOS home screen shortcuts.

Frequently Asked Questions

Why does the download only contain one file?

That is the intended behavior of the ICO format!

Think of an .ico file like a ZIP file for images. It contains multiple layers. When you select 16px, 32px, and 48px, our tool generates all three images and packs them inside that single .ico file.

You do not need to unzip it. Just upload that single file to your website, and browsers will automatically find the correct size inside it to display.

What input formats do you support?

We support PNG, JPG, JPEG, WEBP, and BMP. For the best quality favicons, we highly recommend using a PNG with a transparent background. If you use a JPG (which doesn't support transparency), your icon will have a solid square box around it.

How do I install the favicon on my website?

1. Rename the downloaded file to favicon.ico.
2. Upload it to the root directory of your website (e.g., https://yoursite.com/favicon.ico).
3. Add this code to the <head> section of your HTML:
<link rel="icon" href="/favicon.ico" sizes="any" />