Is my SVG uploaded to a server?

No. Everything runs in your browser. The file is read locally via the File API and Canvas — nothing is sent over the network.

Which sizes are included in the ICO file?

The generated ICO contains three images: 16x16 (toolbar/tab), 32x32 (desktop shortcut), and 48x48 (large icon view). All three are embedded in one file.

My SVG uses external fonts or images — will they render?

Possibly not. SVGs that reference external resources may not render correctly when loaded as a data URL in an Image element. Inline all fonts and images in your SVG for best results.

What ICO format does this produce?

The file uses the standard Windows ICO format with uncompressed 32-bit ARGB BMP bitmaps (BITMAPINFOHEADER). This is widely supported across all operating systems.

What is the maximum SVG file size?

There is no hard limit, but very large or complex SVGs may take a moment to render. The Canvas API handles SVG files measured in megabytes without issue on modern hardware.

SVG to ICO Converter

Upload an SVG file and instantly download a multi-size ICO file (16, 32, 48 px) — no server, no upload, 100% in your browser.

Upload SVG File

Drag & drop SVG here

or click to browse

Included Sizes

16×16 32×32 48×48

All three sizes are always included for maximum compatibility.

Upload an SVG to see the preview

Done!

Summary

Upload an SVG file and instantly download a multi-size ICO file (16, 32, 48 px) — no server, no upload, 100% in your browser.

How it works

Select or drag-and-drop your SVG file onto the upload area.
The browser renders the SVG onto an HTML Canvas at 16, 32, and 48 px.
Each canvas is read back as raw RGBA pixel data.
A pure-JavaScript ICO builder assembles the binary file with a correct ICO header, directory entries, and embedded BMP bitmaps.
Click "Download ICO" to save the resulting .ico file to your device.

Use cases

Create a favicon.ico for a website from an SVG logo.
Generate a Windows application icon from a vector source.
Quickly preview how an SVG looks at small pixel sizes.
Bundle multiple icon resolutions into a single ICO for legacy browser support.
Convert brand SVG marks to ICO without installing desktop software.
Prepare multi-size icons for Electron or desktop app packaging.

Frequently Asked Questions

Last updated: 2026-09-22 · Reviewed by Nham Vu