Image to ICO Favicon Generator Online Free
Convert PNG, JPG, or WebP to a multi-size favicon.ico file. All sizes in one file. Files never leave your browser.
🔒 Your file never leaves your browser. All processing is done locally.
Sizes to include
How to Create a Favicon ICO File
- 1
Upload your image
Click the upload zone or drag and drop a PNG, JPG, or WebP image. Square images produce the best favicons — crop yours first if needed.
- 2
Choose sizes
Select which pixel sizes to include in the ICO file. For most websites, checking all sizes gives maximum browser and OS compatibility.
- 3
Download favicon.ico
Click Generate ICO and download your favicon.ico file. Place it at the root of your website (e.g. https://yoursite.com/favicon.ico).
A favicon is the small icon that appears in browser tabs, bookmarks, and the address bar. The ICO format is the universal standard — it stores multiple image sizes in a single file so browsers and operating systems can pick the best resolution for each context.
Best practices: Start with a square image at least 256×256 pixels. A simple, high-contrast design with minimal detail reads best at small sizes. Logos with fine text or complex gradients often need a simplified version for favicons.
How to add to your website: Place favicon.ico in the root of your domain. Most browsers will find it automatically. You can also declare it explicitly in the HTML: <link rel="icon" href="/favicon.ico">
How the ICO is built: The tool renders your image at each selected size using the Canvas API, captures each as a PNG, then assembles them into an ICO binary container following the Microsoft ICO specification. Modern Windows and all major browsers support PNG-compressed ICO files.