Alpha Channel Viewer
Reveal real transparency with checkerboard, white, black, and mask previews while counting transparent, semi-transparent, and opaque pixels.
Upload an image to inspect actual transparent, semi-transparent, and opaque pixels.
Four transparency views
Inspect the image over checkerboard, white, or black, or view alpha directly as a grayscale mask.
Exact alpha pixel counts
Separate alpha 0, alpha 1–254, and alpha 255 pixels to distinguish empty, feathered, and solid areas.
Downloadable alpha mask
Export transparency as a black-to-white PNG mask for editing, video, or compositing workflows.
Hvordan det fungerer
- 1
Last opp et bilde
Choose an image that may contain transparent or semi-transparent pixels.
- 2
Change the preview
Compare checkerboard, solid backgrounds, and the grayscale alpha mask.
- 3
Review or download
Read alpha statistics and save the extracted mask as PNG.
Understanding the alpha channel
Alpha values range from 0 for fully transparent to 255 for fully opaque. Values between them create partial transparency used for soft edges, shadows, antialiasing, and fades. A white background inside an image is not transparency; checkerboard and alpha-mask views make the difference visible.
Ofte stilte spørsmål
Does every PNG contain transparency?
No. A PNG can be completely opaque even when the format supports alpha.
What do gray areas in the mask mean?
Gray values represent partial transparency between fully transparent black and fully opaque white.
Er bildet mitt lastet opp?
Nei. Bildet ditt forblir i nettleseren din.
Alpha Channel Viewer last reviewed: Sep 1, 2026.