Alphascope

Alphascope channel & alpha inspector

sample-sprite.png

Open image or paste (Ctrl+V) / drop · PNG & TGA decoded exactly, 8/16-bit, indexed

Channels · double-click to solo

Presets · keys 1–6

Backdrop

Zoom · F fit, 0 = 1:1

100%

Image

Inspector click pixel to pin · Esc

Hover

—

	R	G	B	A

Highlight

Thr8

Color Dim the rest Bounds boxes

Threshold is in 8-bit units and also drives the alpha report. Bounds: solid line A>0, dashed A>threshold.

Display

RGB as

Levels (stretch a value range)

Low0

High255

Format preview

Tint single channel Pixel grid

Low byte (16-bit) Index map

Low byte shows the bottom 8 bits of 16-bit samples: noise means real 16-bit detail, flat means padded 8-bit.

Alpha report

Log

Palette

Hover a swatch for details, click to highlight its pixels.

Fix & export

Alpha edges

Bleed passes0 = fill all

Cutoff

Premultiplied alpha

Bit depth

Channel shuffle

History

Export

Exports are encoded here, so RGB under transparent pixels survives (canvas export would wipe it).