Convert Windows Icon (.ico) to Scalable Vector Graphics (.svg) online for free. Fast, secure image conversion with no watermarks or registration.
Conversion settings — add a file to adjust
Upload your .ico file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .svg file when it's ready.
ICO (Windows Icon) is a raster-based multi-resolution icon container, while SVG (Scalable Vector Graphics) is an XML-based vector format that scales to any size without pixelation. Converting ICO to SVG vectorizes the icon's pixel data into geometric paths and curves, producing a resolution-independent version of the icon that renders sharply at any display size from a 16x16 favicon to a billboard.
Icon vectorization is particularly effective because icon designs typically use simple shapes, flat colors, and distinct edges -- all qualities that vector tracing algorithms handle well. The resulting SVG can replace the ICO in web development, where SVG favicons and icons are increasingly preferred.
SVG icons scale infinitely, eliminating the need to maintain multiple resolution variants. A single SVG icon file replaces the 16x16, 32x32, 48x48, and 256x256 versions stored in an ICO container. For responsive web design, SVG icons render perfectly on standard displays, Retina screens, and 4K monitors without any blurriness.
SVG icons are also smaller than ICO files in most cases. A typical multi-resolution ICO file is 50-200 KB, while the equivalent SVG icon is often 1-10 KB. This significant size reduction improves web performance. Additionally, SVG icons can be styled with CSS (changing colors on hover, dark mode variants) and animated with JavaScript -- capabilities that ICO cannot provide.
The largest resolution image from the ICO container is extracted and decoded. The raster pixels are then traced using vector tracing algorithms (vtracer) that identify distinct color regions, generate Bezier curve paths along edges, and optimize path complexity. For simple icons with flat colors, the tracing produces clean geometric shapes that closely match the original design intent. Configuration options include color precision, corner threshold, and speckle filtering. The output is a standard SVG 1.1 document, optimized by SVGO to minimize file size.
Vectorization quality is excellent for simple icons with flat colors and distinct shapes -- the typical characteristics of well-designed icons. The SVG output closely approximates the original ICO at any scale. Complex icons with gradients, photographic elements, or very fine detail may produce SVG files with many paths that approximate rather than perfectly reproduce the original. For best results, use the highest-resolution ICO image as the vectorization source.
| Device | ICO | SVG |
|---|---|---|
| Windows PC | Native | Partial |
| macOS | Partial | Partial |
| iPhone/iPad | Partial | Partial |
| Android | Partial | Partial |
| Linux | Partial | Native |
| Web Browser | No |
ICO to SVG modernizes icon files for the responsive web. Simple, well-designed icons vectorize cleanly, producing SVG files that are smaller, scalable, and CSS-styleable.
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| Native |
Enhver browser, enhver enhed
| Funktion | ICO | SVG |
|---|---|---|
| Fulde navn | Windows Icon | Scalable Vector Graphics |
| Filendelse | .ico | .svg |
| Bedst til | Windows icons | Infinite scaling |