An **Alpha Channel** is an additional 8-bit channel in 32-bit digital graphics that encodes pixel transparency alongside standard Red, Green, and Blue (RGB) color channels.
### Technical Details * **0 (0x00)**: Completely invisible / 100% transparent. * **255 (0xFF)**: Completely opaque / 100% visible. * **1 to 254**: Semi-transparent translucency essential for anti-aliased hair edges, glass reflections, and drop shadows.
Alpha transparency enables digital assets to overlay seamlessly above any background canvas without square border artifacts.