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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.

upload_file

点击浏览 或将文件拖放到这里

Select an image

接受格式：image/*

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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