Free · No Upload · Multi-size
Image to ICO Converter
Convert PNG, JPG or WebP to ICO format for favicons and app icons. Choose multiple sizes. All processing in your browser — instant and private.
Drop images here to convert to ICO
or click to browse · JPG, PNG, WebP · Multiple files supported
What ICO Sizes Do I Need?
For a website favicon, the standard recommendation is to include 16×16, 32×32, and 256×256. Modern browsers use 32×32 for tab icons, 16×16 for bookmarks, and 256×256 for high-DPI displays. Windows uses 48×48 for desktop shortcuts.
For a complete cross-platform app icon, include all sizes: 16, 32, 48, 64, 128, and 256. Our converter bundles all selected sizes into a single .ico file.
How to Use a Favicon on Your Website
After downloading your .ico file, upload it to your website's root directory and add this to your HTML head: <link rel="icon" href="/favicon.ico">
Frequently Asked Questions
What sizes do I need for a favicon?▸
For a standard website favicon, include 16x16, 32x32, and 256x256 pixel sizes. Browsers use 32x32 for tab icons, 16x16 for bookmarks, and 256x256 for high-DPI displays. Our tool bundles all selected sizes into a single ICO file, processed entirely in your browser.
Can I include multiple sizes in one ICO file?▸
Yes, that is the main advantage of the ICO format. You can select any combination of 16x16, 32x32, 48x48, 64x64, 128x128, and 256x256. The browser automatically picks the best size for each context. All processing happens client-side for complete privacy.
How do I add a favicon to my website?▸
Upload the downloaded .ico file to your website root directory and add this tag to your HTML head: <link rel="icon" href="/favicon.ico">. Most browsers also check the root directory automatically. The ICO file is generated entirely in your browser with no server upload.
What is the ICO format?▸
ICO is a container format developed by Microsoft that can hold multiple image sizes in a single file. It is the standard format for website favicons and Windows application icons. Each size is stored as a bitmap with full 32-bit color and alpha transparency support.
Is the ICO converter free to use?▸
Yes, completely free with no limits or watermarks. All conversion happens in your browser using client-side JavaScript, so your images are never uploaded to any server. You can convert as many images as you need.