How It Works

Some AI image generators can't output transparent PNGs directly, including Gemini, Nano Banana, Recraft, and others. This tool recovers the alpha channel by comparing two versions of the same image: one rendered on a white background and one on black.

The math is simple: fully opaque pixels look identical on both backgrounds, while fully transparent pixels show the maximum difference. Everything in between reveals the true transparency.

Works with: Gemini, Nano Banana, Recraft, Midjourney, DALL-E, and any generator that supports background color selection.

Example

Unlike background removers that create hard edges, this technique preserves glows, halos, and soft transparency.

On White

On Black

Result

Image on WHITE background

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Image on BLACK background

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