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Image Alpha Viewer

Inspect and download the alpha (transparency) channel of any image as a grayscale mask. Fully private, runs in your browser.

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Image Alpha Viewer

Extract and inspect the alpha (transparency) channel of any image as a high-contrast grayscale mask. White pixels are fully opaque; black pixels are fully transparent; intermediate grays represent semi-transparency.

Why it matters

Designers and developers often need to understand or extract the alpha channel separately — for masking, compositing, debugging exports, or generating selection masks for image editors.

Features

Renders alpha as a grayscale image
Reports total transparent pixel count and percentage
Downloadable PNG of the alpha mask
100% local processing

Use cases

Verify transparency in PNG/WebP exports
Extract alpha masks for editing software
Debug rendering issues with semi-transparent layers
Audit assets before publishing