PNG Mag

Image formats, compression, and licensed assets

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On-device image tools

Transparency inspector

See the alpha channel and inspect edges against different backgrounds.

Your files stay on your device. Processing never uploads them.

    Output settings

    Download shows alpha as grayscale: black is transparent, white is opaque.

    Choose a file to begin.

    Up to 30 MiB per image and 8 million decoded pixels. Outputs are 8-bit images; metadata is not copied. Animated inputs are treated as a single frame.