Image Transparency Checker

Analyze PNG or WebP alpha pixels, transparency percentage, opaque coverage, and checkerboard preview without uploading the image.

Choose an image with possible transparency

PNG and WebP are most common; JPEG is always opaque after decoding.

—Transparency

—Dimensions

—Transparent pixels

—Semi-transparent

—Opaque

Checkerboard preview

Alpha map · black transparent → white opaque

Choose an imageThe analyzer samples decoded RGBA pixels locally.

Use the connected image workflow

Optimize only when needed, set dimensions deliberately, convert or edit for a real destination, then inspect the exported result before replacing your source asset.

Browser-local limits

Canvas-based export is browser dependent. PNG is broadly available; JPEG/WebP quality and support can vary, and metadata may not be preserved through canvas re-encoding.