Does the ICO preserve PNG transparency?

Yes! ICO format supports alpha transparency. Your PNG transparency will be preserved in the resulting favicon.

What is the best PNG size for favicon?

Use a square PNG, ideally 256x256 or larger. The converter resizes to standard favicon sizes automatically.

Absolutely! Place favicon.ico in your website root and add the appropriate link tag in your HTML head.

Free, client-side, fast. Drag & drop, paste from clipboard. Create multi-size ICO (16–256) or extract PNG from ICO. No upload.

Upload PNG or drop / paste here

Icon sizes

You can include multiple sizes in a single .ico file.

Canvas fit Padding color (if padded)

Only used with “Contain”.

Input (PNG)

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Output (.ico)

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ICO will embed PNG images for selected sizes (Windows/Vista+ compatible).

Upload ICO or drop / paste here

If multiple sizes are found

Some ICOs store PNG entries; we can extract them losslessly.

Input (.ico)

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Output (PNG)

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Lossless extraction when ICO contains PNG entries; otherwise rendered via canvas.

Client-side only. No files leave your browser.