transparency

Despeckle a PNG by removing isolated, near-neighborless non-transparent pixels, right in your browser.

Convert every pixel's alpha to fully opaque or fully transparent, producing crisp, hard-cut PNG edges.

Snap only the extreme ends of a PNG's alpha channel to clean up fringe, while keeping smooth antialiased edges intact.

Feather a PNG's edges with a box blur applied only to the alpha channel, right in your browser.

Scale a digital stamp's existing alpha to make it uniformly see-through, like a watermark, right in your browser.

Turn a scanned or photographed stamp's paper or ink-pad background transparent, right in your browser.