ConvertDuck

SVG to ICO Converter

Create multi-resolution Windows Icons (.ico) from SVG vectors.

Generate Professional Windows Icons from Vector SVGs

Static icons often look blurry when resized. Our tool solves this by embedding multiple optimized layers into a single .ico file. In our tests, converting vector assets to multi-res icons ensures your software or website favicon looks crisp on everything from legacy taskbars to 4K displays. Everything happens locally via the Canvas API, so your design privacy is guaranteed.

How to Create Your Multi-Layer ICO

1. Upload SVG

Drag your vector file into the workspace. We recommend square aspect ratios for the best results.

If your SVG has a transparent background, the ICO will maintain that transparency perfectly.

2. Select Resolutions

Choose which sizes to include, such as 16x16 for favicons or 256x256 for desktop shortcuts.

3. Convert & Download

Click 'Generate' to compile the binary layers. The process is instant as it uses your device's CPU.

Why Professionals Use This Converter

  • ✓ Local Browser Rendering

    We use your browser's native engine to render SVGs. Your files are never uploaded to a server, ensuring 100% data sovereignty.

  • ✓ Smart Multi-Layering

    Unlike simple converters, we allow you to bundle up to 11 different resolutions into one file for maximum compatibility.

  • ✓ No Subscription Limits

    Process as many files as you need. There are no daily caps or hidden 'premium' features for high-resolution exports.

Technical Compatibility

Input Format Scalable Vector Graphics (.svg)
Output Standard Windows Icon Resource (ICO) with PNG compression
Max Resolution Up to 2048x2048 (Experimental)
Browser Support Chrome 90+, Edge 91+, Firefox 88+, Safari 14+

Browser Processing vs. Cloud Tools

Capability Our Local Tool Typical Cloud Site
Privacy 100% Private (No Upload) Server-side storage
Speed Instant (Local) Upload/Download Lag
Batching Unlimited Often throttled
Large Files May use CPU Handled by server

Frequently Asked Questions

Q. Why include multiple sizes in one ICO? ▼
Windows uses different sizes for the taskbar (24px), desktop (32px), and file explorer (256px). A multi-layer ICO ensures the right size is always available without scaling artifacts.
Q. Does this work offline? ▼
Yes, once the page is loaded, the conversion logic runs entirely in your browser without needing an internet connection.
Q. Is there a file size limit? ▼
We recommend SVGs under 20MB to prevent browser tab crashes during the heavy rendering phase.
Q. Will it work for macOS icons? ▼
This tool generates .ico files for Windows. macOS typically uses .icns, though many apps accept high-res ICOs or PNGs.