Click or drag image here
Supports JPG, PNG, GIF, WEBP (max 5MB)
How it works
1. Upload an image (JPG, PNG, GIF, WEBP).
2. Choose the sizes you need (16×16 to 512×512).
3. Click “Generate ICO” – your browser creates a valid ICO file containing all selected sizes as PNG images.
4. Download the ICO file instantly. No server upload, your image stays private.
Tip: For best results, use a square image with a transparent background. This tool is ideal for creating multi‑size favicons and Windows application icons.
Frequently Asked Questions
ICO is a file format used for icons in Windows and favicons for websites. It can contain multiple image sizes in one file, making it ideal for application icons and browser tabs.
You can select any combination of 16x16, 32x32, 48x48, 64x64, 128x128, 256x256, and 512x512 pixels. All selected sizes are embedded as PNG images inside the ICO.
No. All processing happens in your browser using JavaScript. Your image never leaves your device, ensuring complete privacy and security.
Yes, you can upload JPG, PNG, GIF, or WEBP images. The tool converts them to PNG format and packs them into an ICO file. For best results, use a square image with a transparent background.
The maximum image size is 5MB. If your image is larger, please resize it before uploading. The tool is optimized for quick client-side processing.