<img id="css-jagged-fail-2"
     src="https://kryogenix.org/images/css-jagged-banner.jpg">

img#css-jagged-fail-2 {
    -webkit-mask-image: linear-gradient(
      to bottom right,
      white,
      white 50%,
      transparent 50%,
      transparent);
    mask-image: linear-gradient(
      to bottom right,
      white,
      white 50%,
      transparent 50%,
      transparent);
    -webkit-mask-size: 30px 30px;
    mask-size: 30px 30px;
    -webkit-mask-repeat: repeat-x;
    mask-repeat: repeat-x;
    -webkit-mask-position: left bottom;
    mask-position: left bottom;
}