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AI
EPS
PDF Vector
Max 25MB per file
Convert Adobe Illustrator (.ai) files to ICO icon format. Create crisp, scalable Windows icons from your vector graphics. Perfect for favicon generation, desktop icons, and application branding. Supports multi-size ICO files with sizes from 16x16 to 256x256 pixels.
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Adobe Illustrator's native vector format. AI files contain scalable graphics that can be resized without quality loss. They're ideal source files for icons because the vector data produces crisp results at any size. For simpler vectors, consider SVG to ICO conversion.
Windows icon format that can contain multiple image sizes in a single file. ICO files are essential for Windows applications, desktop shortcuts, and website favicons. They support transparency and are universally compatible with Windows systems. Use our ICO Analyzer to inspect existing icon files.
Browser tabs, address bars, bookmarks. Essential for favicons. Also used in Windows Explorer list view and small icon view.
Toolbar buttons, notification area icons. Common in desktop applications for action buttons and status indicators.
Standard Windows icon size. Desktop shortcuts, taskbar buttons (Windows 7 and earlier), file associations.
Medium icon view in Windows Explorer. Control panel icons, installer graphics. Good balance of detail and size.
Large icon view, tiles view. Provides more detail for visual identification. Common in modern Windows interfaces.
Extra large view, preview handlers. Used when icons need to be displayed prominently or in preview modes.
High-DPI displays, jumbo view, Windows Vista and later. Essential for modern high-resolution monitors.
Create favicons for browser tabs and bookmarks. Include 16×16 and 32×32 sizes minimum. Pair with our Favicon Generator for complete favicon packages.
Application icons for EXE files and shortcuts. Include 16×16 through 256×256 for best appearance across all Windows views and DPI settings.
Custom icons for file associations. When users install your software, these icons represent your file types in Windows Explorer.
Create icons for desktop and mobile apps. For iOS/Android, also use our App Icon Generator for platform-specific formats.
We support Adobe Illustrator files from CS and later versions. For best compatibility, save your AI file with "Create PDF Compatible File" option enabled. We also accept EPS files and vector PDFs as alternatives. If you have issues, try exporting to SVG format first.
Windows uses different icon sizes in different contexts. A single-size ICO will be scaled, often resulting in blurry icons. Multi-size ICOs let Windows pick the best size for each context, ensuring crisp display everywhere from taskbars to high-DPI monitors.
Make sure your AI file has a transparent background (no background layer or shape). Select "Transparent" in the background options during conversion. The resulting ICO will maintain alpha transparency. You can verify with our ICO Analyzer.
Single ICO mode creates one file containing all selected sizes—this is what Windows expects for application icons. Separate mode creates individual ICO files for each size, useful when you need specific sizes for different purposes or want to optimize each size individually.
Yes! You can upload multiple AI files and convert them all with the same settings. Each file will generate its own ICO output. For very large batches, consider processing in groups to ensure smooth conversion.
Blurry icons usually result from complex designs with fine details at small sizes. For best results, simplify your design for small sizes or create separate optimized versions. Icons work best with bold shapes, clear contrast, and minimal detail. Use our Image Resizer to preview how your design looks at different sizes.