Are my ICO files uploaded to a server?

No. The entire conversion runs in your browser using the File API, Canvas API, and JavaScript. Your ICO file never leaves your device.

Is the output a true vector SVG?

The output SVG contains the icon as an embedded base64 PNG image element. This preserves the original pixel quality and allows the SVG to scale in any application, but the icon itself remains raster — not traced vector paths. For true vectorization of simple icons, consider a dedicated tracing tool.

Why does my ICO file have multiple frame sizes?

ICO files are multi-resolution containers. They typically include several versions of the icon at different sizes (e.g. 16x16, 32x32, 48x48, 256x256) so Windows can pick the best fit for each context. This tool lists all detected sizes so you can choose which frame to export.

What ICO formats are supported?

Standard ICO files with BMP-encoded frames and PNG-encoded frames (256x256 and larger) are both supported. The browser Canvas API handles decoding via a data URL, so any frame the browser can render will convert correctly.

Why does the 256x256 frame look different from smaller frames?

ICO files often encode the largest frame as a compressed PNG, while smaller frames use BMP encoding. Both are supported; the output quality depends on the source encoding in the ICO file.

Is there a file size limit?

The practical limit is your browser memory. Standard ICO files (under 1 MB) convert instantly. Very large ICO files with many high-resolution frames may take a moment on low-end devices.

ICO to SVG Converter

Name: ICO to SVG Converter
Availability: InStock
Author: Nham Vu

Upload an ICO file, choose a frame size, and download an SVG that embeds the icon as a crisp, scalable image — entirely in your browser.

Upload ICO File

Click or drag an ICO file here

ICO files only — exported as SVG with embedded PNG

SVG Preview

Upload an ICO file to see the preview

Conversion runs instantly, entirely in your browser

Downloaded!

Summary

Upload an ICO file, choose a frame size, and download an SVG that embeds the icon as a crisp, scalable image — entirely in your browser.

How it works

Click or drag an ICO file onto the upload area.
The browser reads the ICO binary and detects all embedded frame sizes.
Select the frame size you want to use from the dropdown.
The chosen frame is rendered to a Canvas and exported as a PNG.
An SVG wrapper embeds the PNG as a base64 image element.
Click Download SVG to save the file to your device.

Use cases

Convert Windows application icons to SVG for use in web projects.
Extract a specific size frame from a multi-resolution ICO file.
Embed an ICO icon in a design tool that accepts SVG input.
Archive ICO icons in an SVG wrapper for long-term compatibility.
Convert favicons from ICO to SVG for modern browser support.
Process ICO files privately without uploading to any third-party service.
Prepare icons for responsive design work that requires SVG format.
Convert brand icons from ICO to SVG for use in presentations.

Frequently Asked Questions

Last updated: 2026-06-10 · Reviewed by Nham Vu