making sharp pixel perfect curves in illustrator

I’m trying to export a vector graphic to a png with full transparent alpha channel but i noticed that all around the edge of the curves the pixels are blended semi tranparent. I need full opaque cut next to full alpha. At first i thought it was export settings but then when i turned on the pixel preview in illustrator i saw this:

enter image description here

As you can see the semi transparent pixels seem to be inherent in the way illustrator is currently handling rasterizing curves cutting across pixels. Is there any way to make it so illustrator cuts pixels either full opaque or full transparent, instead of this semi transparent blend?

Answer

You can switch off anti-aliasing when you export as PNG.

Here’s an example

enter image description here

Attribution
Source : Link , Question Author : zander , Answer Author : Billy Kerr

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