Result

CSSのみでノイズなテキストエフェクトを実装しています。
clipとkeyframesを応用しているようです。

css

.glitch {/*基本設定*/
  color: white;
  font-size: 40px;
  position: relative;
  width: 400px;
  margin: 0 auto;
}

@keyframes noise-anim {/*細かい動きを設定してノイズが走っているかのように動かす*/
  0% {
    clip: rect(77px, 9999px, 6px, 0);
  }
  5% {
    clip: rect(65px, 9999px, 70px, 0);
  }
  10% {
    clip: rect(82px, 9999px, 82px, 0);
  }
  15% {
    clip: rect(32px, 9999px, 35px, 0);
  }
  20% {
    clip: rect(31px, 9999px, 49px, 0);
  }
  25% {
    clip: rect(18px, 9999px, 46px, 0);
  }
  30% {
    clip: rect(94px, 9999px, 64px, 0);
  }
  35% {
    clip: rect(69px, 9999px, 31px, 0);
  }
  40% {
    clip: rect(6px, 9999px, 72px, 0);
  }
  45% {
    clip: rect(25px, 9999px, 35px, 0);
  }
  50% {
    clip: rect(82px, 9999px, 26px, 0);
  }
  55% {
    clip: rect(7px, 9999px, 92px, 0);
  }
  60% {
    clip: rect(54px, 9999px, 30px, 0);
  }
  65% {
    clip: rect(86px, 9999px, 90px, 0);
  }
  70% {
    clip: rect(38px, 9999px, 65px, 0);
  }
  75% {
    clip: rect(41px, 9999px, 66px, 0);
  }
  80% {
    clip: rect(31px, 9999px, 37px, 0);
  }
  85% {
    clip: rect(8px, 9999px, 12px, 0);
  }
  90% {
    clip: rect(50px, 9999px, 69px, 0);
  }
  95% {
    clip: rect(7px, 9999px, 42px, 0);
  }
  100% {
    clip: rect(14px, 9999px, 57px, 0);
  }
}
.glitch:after {/*疑似要素を加えてカスタムデータ属性の値を表示、重ねる*/
  content: attr(data-text);
  position: absolute;
  left: 2px;
  text-shadow: -1px 0 red;
  top: 0;
  color: white;
  background: black;
  overflow: hidden;
  clip: rect(0, 900px, 0, 0);
  animation: noise-anim 2s infinite linear alternate-reverse;
}

@keyframes noise-anim-2 {/*ノイズ用アニメーションその2*/
  0% {
    clip: rect(18px, 9999px, 13px, 0);
  }
  5% {
    clip: rect(74px, 9999px, 51px, 0);
  }
  10% {
    clip: rect(33px, 9999px, 65px, 0);
  }
  15% {
    clip: rect(64px, 9999px, 66px, 0);
  }
  20% {
    clip: rect(75px, 9999px, 6px, 0);
  }
  25% {
    clip: rect(40px, 9999px, 49px, 0);
  }
  30% {
    clip: rect(71px, 9999px, 1px, 0);
  }
  35% {
    clip: rect(42px, 9999px, 73px, 0);
  }
  40% {
    clip: rect(92px, 9999px, 57px, 0);
  }
  45% {
    clip: rect(4px, 9999px, 33px, 0);
  }
  50% {
    clip: rect(4px, 9999px, 34px, 0);
  }
  55% {
    clip: rect(49px, 9999px, 25px, 0);
  }
  60% {
    clip: rect(24px, 9999px, 44px, 0);
  }
  65% {
    clip: rect(31px, 9999px, 99px, 0);
  }
  70% {
    clip: rect(54px, 9999px, 83px, 0);
  }
  75% {
    clip: rect(57px, 9999px, 97px, 0);
  }
  80% {
    clip: rect(3px, 9999px, 15px, 0);
  }
  85% {
    clip: rect(84px, 9999px, 34px, 0);
  }
  90% {
    clip: rect(100px, 9999px, 88px, 0);
  }
  95% {
    clip: rect(91px, 9999px, 59px, 0);
  }
  100% {
    clip: rect(10px, 9999px, 87px, 0);
  }
}
.glitch:before {
  content: attr(data-text);
  position: absolute;
  left: -2px;
  text-shadow: 1px 0 blue;
  top: 0;
  color: white;
  background: black;
  overflow: hidden;
  clip: rect(0, 900px, 0, 0);
  animation: noise-anim-2 3s infinite linear alternate-reverse;
}

html

<div class="glitch" data-text="かちびと.net">かちびと.net</div> 

via

CSS Glitched Text