Verify if your PNG image has transparency. Analyze alpha channel, count transparent pixels, and visualize where transparency exists in your image.
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Check Transparency analyzes PNG images to determine if they contain transparent pixels. The tool examines the alpha channel, counts transparent pixels, calculates transparency percentage, and visualizes where transparency exists. Essential for verifying image exports, troubleshooting transparency issues, and ensuring cutouts are properly processed before use in designs.
The tool reads every pixel's alpha value (0-255). Fully transparent pixels have alpha 0, fully opaque pixels have alpha 255, and semi-transparent pixels fall between. The analysis counts pixels below 255 alpha as containing some transparency. The alpha map visualization shows white for opaque areas and black for transparent areas, making it easy to see exactly where transparency exists.
Total Pixels shows image dimensions multiplied together. Transparent count includes all pixels with any transparency (alpha less than 255). The percentage indicates how much of the image is non-opaque. An image can have 0% transparency yet still be PNG format - the format supports transparency but doesn't require it. JPEG images will always show 0% as JPEG doesn't support alpha channels.
Images may appear transparent in editors but export without alpha channel if saved as JPEG. Some PNGs have white backgrounds that look transparent but aren't - check the alpha map to confirm. Semi-transparent edges (anti-aliasing) count as transparent even if barely visible. Pseudo-transparency using a specific color (like magenta) won't register as actual alpha transparency.
Verify exports from design software before delivery to clients. Check downloaded assets to confirm they have usable transparency. Troubleshoot images that don't composite correctly in other applications. Validate cutouts and product photos have proper alpha channels. Audit image libraries to identify which files support transparent backgrounds.