PNG / JPG to ICO Converter

Create favicon .ico files with multiple sizes — no signup, no watermark, no uploads. Your files never leave your device.

What is an ICO file?

ICO is the standard format for Windows icons and browser favicons. Unlike JPG or PNG, a single .ico file can contain multiple image sizes — so Windows, browsers, and apps can pick the right resolution depending on where the icon is displayed.

Which sizes should I include?

For a website favicon, 16×16 and 32×32 cover almost every browser and device. Add 48×48 for Windows taskbar pinning. Select all sizes if you need the icon to work as a Windows application icon too — Windows uses 256×256 for large icon views.

Best source image for ICO conversion

Use a square PNG with a transparent background for best results. The converter will resize your image to each selected dimension — a high-resolution source (at least 256×256) ensures the smaller sizes remain sharp.

Frequently Asked Questions

+Are my images uploaded to a server?

No. The entire conversion — resizing and ICO packaging — happens locally in your browser. Nothing is sent to any server.

+Which sizes should I include in my favicon?

For most websites, 16×16 and 32×32 are sufficient. Add 48×48 for Windows taskbar pinning and 256×256 for high-DPI displays and Windows application icons.

+What image should I use as the source?

A square PNG with a transparent background works best. Use at least 256×256 pixels as the source so smaller sizes stay sharp when scaled down.

+Can I convert multiple images at once?

Yes. Drop multiple images and each will be converted to its own .ico file using the same selected sizes.

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