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Convert Images to ICO Online, Free

Need a favicon for your website or an icon file for a Windows application? Our free online converter turns your JPG, PNG, and other images into ICO format in seconds, right in your browser.

ICO is the standard file format used for website favicons and Windows application icons. Unlike standard image formats, ICO files can contain multiple image sizes within a single file, allowing icons to display sharply at different resolutions. This tool is built for web developers, designers, and software developers who need a properly formatted ICO file without using dedicated icon-editing software.

What Is ICO and Why Use It?

ICO is a specialized image container format designed specifically for icons. A single ICO file can hold several versions of the same image at different sizes (such as 16x16, 32x32, and 48x48 pixels), so the appropriate size is automatically used depending on where the icon is displayed. ICO offers:

• Multiple image sizes stored in a single file
• Support for transparency, important for icons displayed on varied backgrounds
• Universal support as the required format for website favicons
• Native support for Windows application and file icons

Because browsers and operating systems look specifically for ICO files in certain contexts, such as a site's favicon.ico, this format remains essential even though most other image use cases have moved to more modern formats.

How to Convert an Image to ICO

1. Upload your image by dragging and dropping it, or clicking to browse your files.
2. Our tool processes your image and converts it into ICO format.
3. Click Convert and your ICO file will be generated in seconds.
4. Download your ICO file, ready to use as a favicon or application icon.

Why Use Our Image to ICO Converter

Free, No Installation Required Convert images to ICO format without installing icon editing or design software.

Built for Favicons and App Icons Get a properly formatted ICO file that displays correctly across browsers, tabs, and operating systems.

Fast and Simple Upload, convert, and download in a few clicks, no technical knowledge needed.

Your Files Stay Private Uploaded images are processed securely and automatically deleted after conversion. We don't store, view, or share your files.

Common Uses for ICO Format

Website Favicons Web developers and site owners convert logos and graphics to ICO format to create the small icon shown in browser tabs and bookmarks.

Windows Application Icons Software developers use ICO files for application icons, file type icons, and shortcut icons within Windows.

Branding Consistency Businesses convert their logo to ICO format to ensure consistent, recognizable branding across browser tabs and desktop shortcuts.

Custom File and Folder Icons Users create custom ICO files to personalize file and folder icons within Windows.

Frequently Asked Questions

What size should my favicon be? Favicons are typically needed in multiple sizes, with 16x16, 32x32, and 48x48 pixels being the most common. A good ICO converter will generate or support multiple sizes within a single file for the best display across browsers and devices.

Does my image need to be square to convert to ICO? For best results, yes. Icons are almost always square, so starting with a square image (or one that can be cropped to square) will give you a cleaner result than a wide or tall rectangular image.

Can I use a logo with transparency for my favicon? Yes. ICO format supports transparency, which works well for logos and icons that need to display cleanly over different background colors.

Is this converter free to use? Yes. There are no hidden fees, subscriptions, or conversion limits.

Is it safe to upload my images? Yes. Files are processed securely and automatically deleted after conversion. We do not store, view, or share your uploaded images.

What file formats can I upload? You can upload JPG, PNG, and other common image formats for conversion to ICO.

Start Converting Now

Upload your image and get a ready-to-use favicon or icon file in seconds. No sign-up, no software, completely free.