PNG Transparency on Canvas

Question

Does canvas support PNG alpha? Im having some issues with a few PNGs that I've added to the canvas. The edges of the images are black and jagged as if no alpha channel exists or is being recognized.

Solution

If you put a 24-bit PNG with alpha on the canvas it understands it.

https://developer.mozilla.org/en-US/docs/Web/Guide/HTML/Canvas_tutorial/Using_images

Maybe your PNGs are not clean, i.e. have non-transparent regions at the borders?