Image

PNG Transparency Checker

See how much of an image is transparent and view its alpha mask.

Supported formats: PNG, WebP.

PNG · WebP

Up to 25 MB

Choose a fileProcessed in your browser — files are never uploaded.PNG · WebP · Up to 25 MB

Counts transparent, semi-transparent and opaque pixels, finds the visible content box, and exports the alpha channel as a black-and-white image.

Good to know

Frequently asked questions

How do I use it?

Choose your file and press “Check transparency”. When it finishes, download the result.

How does it work?

Counts transparent, semi-transparent and opaque pixels, finds the visible content box, and exports the alpha channel as a black-and-white image.

Are my files uploaded?

No. Files are processed on your device and never sent to our servers. No account is needed.