Favicon Maker & ICO Converter
ICO is the icon format used for browser favicons, Windows application icons, and shortcut images. A single ICO file can contain multiple sizes (16x16, 32x32, 48x48, etc.) to serve different display contexts. FastEdit converts any image to ICO format and generates properly sized favicons directly in your browser.
Need a quick favicon from your logo? Drop it into FastEdit, crop to square, and export as ICO. The entire process is client-side. Your branding assets never touch a third-party server.
Format ICO container with embedded BMP or PNG images
Color Depth 1-bit to 32-bit (including 8-bit alpha transparency)
Standard Sizes 16x16, 24x24, 32x32, 48x48, 64x64, 128x128, 256x256
Animation Support No (use .ani format for animated cursors)
What it handles
- Convert PNG, JPEG, WebP, or any image to ICO format with automatic multi-size generation
- Crop to square aspect ratio with visual preview, essential for favicon creation
- Generate standard favicon sizes (16x16, 32x32, 48x48) in a single ICO file
- Side-by-side preview to verify icon clarity at small sizes before exporting
- Smart resizing that preserves sharpness and recognizability at tiny pixel dimensions
- Export as PNG favicon alternative for modern browsers that support it
Where it fits
- Creating a website favicon from a company logo: crop, resize, and export as ICO in seconds
- Generating multi-size ICO files for Windows desktop applications from a single source image
- Converting PNG icons to ICO format for legacy browser compatibility
- Creating bookmark and tab icons from existing brand assets without Photoshop or design tools
- Preparing app icons at multiple standard sizes from a single high-resolution source
Technical Specifications
Format ICO container with embedded BMP or PNG images
Color Depth 1-bit to 32-bit (including 8-bit alpha transparency)
Standard Sizes 16x16, 24x24, 32x32, 48x48, 64x64, 128x128, 256x256
Animation Support No (use .ani format for animated cursors)
Transparency 32-bit ICO supports full alpha transparency
Browser Support Universal as favicon; modern browsers also accept PNG favicons
Max Embedded Images Up to 255 size variants in a single ICO file
MIME Type image/x-icon or image/vnd.microsoft.icon