ICO Converter

Create high-quality Favicons (ICO) from your images instantly in your browser.

Click or drag image to upload

Supported formats: PNG, JPG, WEBP, etc.

What is an ICO file?

An ICO file is an image file format for computer icons in Microsoft Windows. It is primarily used for website favicons and desktop icons. While modern browsers support PNG and SVG for favicons, ICO remains the most compatible format for older environments.

Recommended Sizes

16x16: Standard browser tab favicon.
32x32: Standard desktop icon or taskbar.
128x128+: High-resolution displays and modern operating systems.

Best Practices

For the best favicon results, use a square source image. If your image isn't square, ImageMagick will resize it to fit the selected dimensions.

Transparency: Use source images with transparent backgrounds (like PNG) to ensure your icon looks professional on any background.

Since conversion happens locally using ImageMagick WASM, your files are never uploaded, ensuring maximum privacy and speed.