ICO to SVG Converter

ICO files contain one or more raster images at different sizes — typically 16×16, 32×32, 48×48, and sometimes a 256×256 PNG-compressed frame. Browsers and operating systems pick the size that best fits the context. When you need to use an ICO icon in a vector application, embed it in an SVG document, or include it in a workflow that requires SVG input, this converter extracts the largest available frame from the ICO container and wraps it in an SVG file.

The output is an embedded raster SVG: the extracted icon frame is base64-encoded as an <image> element inside the SVG. This is not vectorisation — the pixel data is preserved as-is. If your icon was originally created from an SVG source (which is common for modern web icons), the SVG output will display the rasterised version, not the original vector paths. For true vector output from a pixel-based ICO, the closest alternative is to use the original SVG source if you have it, or to manually trace the icon in a vector application.

How to convert ICO to SVG

1. Click Choose file or drag your ICO file onto the upload area.
2. The converter extracts the highest-resolution frame from the ICO container and produces an SVG output.
3. Click Download to save the SVG file.

Technical details

ICO is a container format, not a single image. ImageMagick extracts the largest frame by pixel dimensions available in the file. A 256×256 PNG frame (present in most modern ICO files created for Windows) is preferred over smaller BMP-encoded frames. The extracted frame is base64-encoded and embedded in an SVG <image> element. The SVG canvas is set to the frame dimensions. Maximum upload size is 20 MB, though ICO files are almost always well under 1 MB.

When ICO to SVG is the right conversion

• Design documentation. Embedding an icon in an SVG-based spec, style guide, or design document keeps everything in one format without linking to external raster files.
• SVG sprite creation. Some SVG sprite workflows require all image assets to be SVG files before import. Wrapping the ICO frame in SVG makes it eligible for inclusion.
• Inkscape or Illustrator import. Both applications open SVG natively as a first-class document. Converting the ICO to SVG first, then importing into Inkscape, puts the icon on the canvas as an embedded object without requiring a separate file-link.
• Placeholder before source SVG is located. If you know the original SVG source exists but cannot find it yet, the converted SVG is usable in the short term — it scales without blurring at sizes close to the largest ICO frame.
• Browser-embeddable icon. An SVG with an embedded raster image works as an <img> source in any modern browser, which is useful if you need a single file that works in SVG-aware contexts.

Frequently asked questions

Will I get back the original vector paths from my favicon?

Only if the ICO file contains a true SVG frame, which almost no ICO files do. Standard ICO files contain raster frames (PNG or BMP). This converter wraps the raster frame in an SVG container. If your icon was designed in Illustrator or Figma and you want the vector version, find the original source file — it will not be recoverable from the ICO.

Which size does the converter use if the ICO has multiple frames?

ImageMagick selects the largest available frame by pixel dimensions. For a typical Windows favicon.ico containing frames at 16×16, 32×32, and 256×256, the 256×256 frame is extracted. Smaller frames are discarded.

Can I use the SVG output as a favicon on my website?

Yes — modern browsers support SVG favicons via <link rel="icon" type="image/svg+xml" href="favicon.svg">. An SVG favicon scales sharply at all display densities, including retina screens, without requiring a separate 2× file. Older browsers fall back to ICO or PNG if provided in the <link> stack.

Why does the SVG file seem larger than the ICO?

The ICO container stores the 256×256 frame as a compressed PNG. When that PNG data is base64-encoded inside an SVG, the base64 encoding adds roughly 33% overhead and the SVG has no compression layer. The file grows. This is normal — SVG is a text format and embedding binary data in it is inherently less compact than a native binary container.