title: Images in web browser are slightly blurred. How to disable it?
body: <p>I'm making a game. Collisions in this game are based on color of pixel on canvas. I get color pixel and if it is for example red, player can't move.
  Unfortunately in firefox images are remotely blurred. Pixels are fluently changed from white color to red. But I don't want that.
  <img src="https://i.stack.imgur.com/DKaVs.png" alt="enter image description here">
  Any ideas how to answer to this problem?</p>