Is it possible to create a glow effect in SVG

Question

I'm learning SVG and I would like to know if it is possible to create this kind of glow effect with SVG, interactively as in the following example -hovering trigger the effect - https://codepen.io/FelixRilling/pen/qzfoc

The fact is that I'm wondering how make the light come and go, the advantage of SVG would be a more accurate effect with better shape following, this kind of advantage. Is it possible to do that with SVG?

Following, the code with HTML CSS

HTML:

<div id="container">

    <p><a href="https://en.wikipedia.org/wiki/Red">
        RED
    </a></p>

    <p><a href="https://en.wikipedia.org/wiki/Blue">
        BLUE
    </a></p>

    <p><a href="https://en.wikipedia.org/wiki/Yellow">
        Yellow
    </a></p>

    <p><a href="https://en.wikipedia.org/wiki/Green">
        GREEN
    </a></p>

    <p><a href="https://en.wikipedia.org/wiki/Orange_(colour)">
        ORANGE
    </a></p>

    <p><a href="https://en.wikipedia.org/wiki/Violet_(color)">
        VIOLET
    </a></p>

</div>

<div id="linkBack" style="position:absolute;right:0px;top:0px;background-color:#333;margin:0;width:60px;padding:5px"><a href="http://www.f-rilling.com/projects/" target="_blank" style="font-size:14px;text-decoration:none;color:#fff;padding:0 0 0 5px;font-family:sans-serif">My Site</a></div>

CSS:

body {
  background-color: #222222;
  background: repeating-linear-gradient(45deg, #2b2b2b 0%, #2b2b2b 10%, #222222 0%, #222222 50%) 0 / 15px 15px;
}

#container {
  width: 500px;
  margin: auto;
}

/*Neon*/
p {
  text-align: center;
  font-size: 7em;
  margin: 20px 0 20px 0;
}

a {
  text-decoration: none;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  transition: all 0.5s;
}

p:nth-child(1) a {
  color: #fff;
  font-family: Monoton;
  -webkit-animation: neon1 1.5s ease-in-out infinite alternate;
  -moz-animation: neon1 1.5s ease-in-out infinite alternate;
  animation: neon1 1.5s ease-in-out infinite alternate;
}

p:nth-child(1) a:hover {
  color: #FF1177;
  -webkit-animation: none;
  -moz-animation: none;
  animation: none;
}

p:nth-child(2) a {
  font-size: 1.5em;
  color: #228DFF;
  font-family: Iceland;
}

p:nth-child(2) a:hover {
  -webkit-animation: neon2 1.5s ease-in-out infinite alternate;
  -moz-animation: neon2 1.5s ease-in-out infinite alternate;
  animation: neon2 1.5s ease-in-out infinite alternate;
}

p:nth-child(3) a {
  color: #FFDD1B;
  font-family: Pacifico;
}

p:nth-child(3) a:hover {
  -webkit-animation: neon3 1.5s ease-in-out infinite alternate;
  -moz-animation: neon3 1.5s ease-in-out infinite alternate;
  animation: neon3 1.5s ease-in-out infinite alternate;
}

p:nth-child(4) a {
  color: #B6FF00;
  font-family: "Press Start 2P";
  font-size: 0.8em;
}

p:nth-child(4) a:hover {
  -webkit-animation: neon4 1.5s ease-in-out infinite alternate;
  -moz-animation: neon4 1.5s ease-in-out infinite alternate;
  animation: neon4 1.5s ease-in-out infinite alternate;
}

p:nth-child(5) a {
  color: #FF9900;
  font-family: Audiowide;
}

p:nth-child(5) a:hover {
  -webkit-animation: neon5 1.5s ease-in-out infinite alternate;
  -moz-animation: neon5 1.5s ease-in-out infinite alternate;
  animation: neon5 1.5s ease-in-out infinite alternate;
}

p:nth-child(6) a {
  color: #BA01FF;
  font-family: Vampiro One;
}

p:nth-child(6) a:hover {
  -webkit-animation: neon6 1.5s ease-in-out infinite alternate;
  -moz-animation: neon6 1.5s ease-in-out infinite alternate;
  animation: neon6 1.5s ease-in-out infinite alternate;
}

p a:hover {
  color: #ffffff;
}
/*glow for webkit*/

@-webkit-keyframes neon1 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF1177, 0 0 70px #FF1177, 0 0 80px #FF1177, 0 0 100px #FF1177, 0 0 150px #FF1177;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF1177, 0 0 35px #FF1177, 0 0 40px #FF1177, 0 0 50px #FF1177, 0 0 75px #FF1177;
  }
}

@-webkit-keyframes neon2 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #228DFF, 0 0 70px #228DFF, 0 0 80px #228DFF, 0 0 100px #228DFF, 0 0 150px #228DFF;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #228DFF, 0 0 35px #228DFF, 0 0 40px #228DFF, 0 0 50px #228DFF, 0 0 75px #228DFF;
  }
}

@-webkit-keyframes neon3 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FFDD1B, 0 0 70px #FFDD1B, 0 0 80px #FFDD1B, 0 0 100px #FFDD1B, 0 0 150px #FFDD1B;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FFDD1B, 0 0 35px #FFDD1B, 0 0 40px #FFDD1B, 0 0 50px #FFDD1B, 0 0 75px #FFDD1B;
  }
}

@-webkit-keyframes neon4 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #B6FF00, 0 0 70px #B6FF00, 0 0 80px #B6FF00, 0 0 100px #B6FF00, 0 0 150px #B6FF00;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #B6FF00, 0 0 35px #B6FF00, 0 0 40px #B6FF00, 0 0 50px #B6FF00, 0 0 75px #B6FF00;
  }
}

@-webkit-keyframes neon5 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF9900, 0 0 70px #FF9900, 0 0 80px #FF9900, 0 0 100px #FF9900, 0 0 150px #FF9900;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF9900, 0 0 35px #FF9900, 0 0 40px #FF9900, 0 0 50px #FF9900, 0 0 75px #FF9900;
  }
}

@-webkit-keyframes neon6 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #ff00de, 0 0 70px #ff00de, 0 0 80px #ff00de, 0 0 100px #ff00de, 0 0 150px #ff00de;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #ff00de, 0 0 35px #ff00de, 0 0 40px #ff00de, 0 0 50px #ff00de, 0 0 75px #ff00de;
  }
}
/*glow for mozilla*/

@-moz-keyframes neon1 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF1177, 0 0 70px #FF1177, 0 0 80px #FF1177, 0 0 100px #FF1177, 0 0 150px #FF1177;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF1177, 0 0 35px #FF1177, 0 0 40px #FF1177, 0 0 50px #FF1177, 0 0 75px #FF1177;
  }
}

@-moz-keyframes neon2 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #228DFF, 0 0 70px #228DFF, 0 0 80px #228DFF, 0 0 100px #228DFF, 0 0 150px #228DFF;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #228DFF, 0 0 35px #228DFF, 0 0 40px #228DFF, 0 0 50px #228DFF, 0 0 75px #228DFF;
  }
}

@-moz-keyframes neon3 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FFDD1B, 0 0 70px #FFDD1B, 0 0 80px #FFDD1B, 0 0 100px #FFDD1B, 0 0 150px #FFDD1B;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FFDD1B, 0 0 35px #FFDD1B, 0 0 40px #FFDD1B, 0 0 50px #FFDD1B, 0 0 75px #FFDD1B;
  }
}

@-moz-keyframes neon4 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #B6FF00, 0 0 70px #B6FF00, 0 0 80px #B6FF00, 0 0 100px #B6FF00, 0 0 150px #B6FF00;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #B6FF00, 0 0 35px #B6FF00, 0 0 40px #B6FF00, 0 0 50px #B6FF00, 0 0 75px #B6FF00;
  }
}

@-moz-keyframes neon5 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF9900, 0 0 70px #FF9900, 0 0 80px #FF9900, 0 0 100px #FF9900, 0 0 150px #FF9900;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF9900, 0 0 35px #FF9900, 0 0 40px #FF9900, 0 0 50px #FF9900, 0 0 75px #FF9900;
  }
}

@-moz-keyframes neon6 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #ff00de, 0 0 70px #ff00de, 0 0 80px #ff00de, 0 0 100px #ff00de, 0 0 150px #ff00de;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #ff00de, 0 0 35px #ff00de, 0 0 40px #ff00de, 0 0 50px #ff00de, 0 0 75px #ff00de;
  }
}
/*glow*/

@keyframes neon1 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF1177, 0 0 70px #FF1177, 0 0 80px #FF1177, 0 0 100px #FF1177, 0 0 150px #FF1177;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF1177, 0 0 35px #FF1177, 0 0 40px #FF1177, 0 0 50px #FF1177, 0 0 75px #FF1177;
  }
}

@keyframes neon2 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #228DFF, 0 0 70px #228DFF, 0 0 80px #228DFF, 0 0 100px #228DFF, 0 0 150px #228DFF;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #228DFF, 0 0 35px #228DFF, 0 0 40px #228DFF, 0 0 50px #228DFF, 0 0 75px #228DFF;
  }
}

@keyframes neon3 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FFDD1B, 0 0 70px #FFDD1B, 0 0 80px #FFDD1B, 0 0 100px #FFDD1B, 0 0 150px #FFDD1B;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FFDD1B, 0 0 35px #FFDD1B, 0 0 40px #FFDD1B, 0 0 50px #FFDD1B, 0 0 75px #FFDD1B;
  }
}

@keyframes neon4 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #B6FF00, 0 0 70px #B6FF00, 0 0 80px #B6FF00, 0 0 100px #B6FF00, 0 0 150px #B6FF00;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #B6FF00, 0 0 35px #B6FF00, 0 0 40px #B6FF00, 0 0 50px #B6FF00, 0 0 75px #B6FF00;
  }
}

@keyframes neon5 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #FF9900, 0 0 70px #FF9900, 0 0 80px #FF9900, 0 0 100px #FF9900, 0 0 150px #FF9900;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #FF9900, 0 0 35px #FF9900, 0 0 40px #FF9900, 0 0 50px #FF9900, 0 0 75px #FF9900;
  }
}

@keyframes neon6 {
  from {
    text-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px #fff, 0 0 40px #ff00de, 0 0 70px #ff00de, 0 0 80px #ff00de, 0 0 100px #ff00de, 0 0 150px #ff00de;
  }
  to {
    text-shadow: 0 0 5px #fff, 0 0 10px #fff, 0 0 15px #fff, 0 0 20px #ff00de, 0 0 35px #ff00de, 0 0 40px #ff00de, 0 0 50px #ff00de, 0 0 75px #ff00de;
  }
}
/*REEEEEEEEEEESPONSIVE*/

@media (max-width: 650px) {
  #container {
    width: 100%;
  }
  p {
    font-size: 3.5em;
  }
}

Paul LeBeau · Accepted Answer

Yes it's possible.

The basic idea is to use a filter to blur the shape, colour the blurred shape to your neon colour, then put it behind the original text.

However to achieve the best neon glow, you need to tinker with the colours and the intensity of the glow. In the following example, I have used a series of blurs of different amounts stacked together to achieve a better effect. This is a similar approach to the codepen you have linked to. But there will be other ways to do it also.

Note that, for simplicity, the particular filter definition used here expects the original shape (the text) to be white. It may not work well with other colours. But the filter can be tweaked to get around that issue.

svg {
  background-color: black;
  width: 400px;
}

text {
  font-family: Helvetica, Arial, sansserif;
  font-size: 100px;
  font-weight: 900;
  fill: white;
  filter: url(#red-glow);
}

<svg viewBox="0 0 400 400">
  <defs>
    <filter id="red-glow" filterUnits="userSpaceOnUse"
            x="-50%" y="-50%" width="200%" height="200%">
       <!-- blur the text at different levels-->
      <feGaussianBlur in="SourceGraphic" stdDeviation="5" result="blur5"/>
      <feGaussianBlur in="SourceGraphic" stdDeviation="10" result="blur10"/>
      <feGaussianBlur in="SourceGraphic" stdDeviation="20" result="blur20"/>
      <feGaussianBlur in="SourceGraphic" stdDeviation="30" result="blur30"/>
      <feGaussianBlur in="SourceGraphic" stdDeviation="50" result="blur50"/>
      <!-- merge all the blurs except for the first one -->
      <feMerge result="blur-merged">
        <feMergeNode in="blur10"/>
        <feMergeNode in="blur20"/>
        <feMergeNode in="blur30"/>
        <feMergeNode in="blur50"/>
      </feMerge>
      <!-- recolour the merged blurs red-->
      <feColorMatrix result="red-blur" in="blur-merged" type="matrix"
                     values="1 0 0 0 0
                             0 0.06 0 0 0
                             0 0 0.44 0 0
                             0 0 0 1 0" />
      <feMerge>
        <feMergeNode in="red-blur"/>       <!-- largest blurs coloured red -->
        <feMergeNode in="blur5"/>          <!-- smallest blur left white -->
        <feMergeNode in="SourceGraphic"/>  <!-- original white text -->
      </feMerge>
    </filter>
  </defs>

  <text x="200" y="200" text-anchor="middle">RED</text>
</svg>

Is it possible to create a glow effect in SVG

Tags:

html

css

svg

HoCo_

1 Answers

Paul LeBeau

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Is it possible to create a glow effect in SVG

Tags:

html

css

svg

HoCo_

1 Answers

Paul LeBeau

Related questions

Recent Activity

Donate For Us