ICO Converter Online | Favicon ICO Generator & Converter
Free online ICO converter and favicon generator. Convert images to ICO format with multiple sizes (16x16, 32x32, 48x48, 64x64) for website favicons.
Upload Image
Drag & drop an image here, or click to select
Max file size: 50MB
How to Use
- Click the upload area or drag and drop an image file
- The image will be displayed as a preview after upload
- Adjust settings if available (quality, size, etc.)
- Click 'Convert' to process the image
- Preview the result and check the file size
- Click 'Download' to save the converted file
- All processing happens in your browser — no uploads
About ICO Format
What is ICO?
ICO (Icon) is an image format used for icons in Microsoft Windows and website favicons. ICO files can contain multiple images at different sizes and color depths, allowing the operating system or browser to select the most appropriate version for display.
Favicon Usage
Website favicons are small icons displayed in browser tabs, bookmarks, and address bars. Most websites use ICO format for maximum browser compatibility. The standard favicon sizes are 16x16, 32x32, and 48x48 pixels, with 32x32 being the most common.
Size Requirements
For website favicons, 32x32 pixels is the recommended standard size. This converter automatically resizes your image to create a properly sized icon. For best results, use a square source image with clear, simple graphics.
Modern Alternatives
While ICO remains important for compatibility, modern websites can also use PNG or SVG favicons. However, ICO is still recommended as a fallback for older browsers. This tool creates PNG-based favicons at the standard 32x32 size.
Features
- Convert any image to favicon ICO format
- Automatic resizing to standard 32x32
- Suitable for website favicon creation
- Browser-based with no upload needed
Use Cases
- Creating website favicons from logos
- Converting PNG icons to ICO format
- Generating favicons for web development
- Making Windows application icons