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HTML 

              
                <h2><a href="https://www.deque.com/blog/creating-accessible-svgs" target="_blank">Accessible SVG Pattern Comparison</a></h2>
<p><em>Note: this CodePen has updated testing results vs the blog post. The following pattern examples/results are the most accurate source of accessible SVG information.</em></p>
<p>Last updated: May 7, 2021</p>
<hr><br>
<h2>Using the &lt;img&gt; tag</h2>
<div class="grid">
  <div class="grid-item">
    <img class="lightbulb" alt="Lightbulb moment!" src="https://upload.wikimedia.org/wikipedia/commons/2/2b/BulbIcon.svg">
    <h3>Pattern 1:<br><code>&lt;img&gt;</code> + <code>alt="[words]"</code></h3>
  </div>
  <div class="grid-item">
    <img role="img" class="lightbulb" alt="Lightbulb moment!" src="https://upload.wikimedia.org/wikipedia/commons/2/2b/BulbIcon.svg">
    <h3>Pattern 2:<br><code>&lt;img&gt;</code> + <code>role="img"</code> + <code>alt="[words]"</code></h3>
  </div>
  <div class="grid-item">
    <img role="img" class="lightbulb" aria-label="Lightbulb moment!" src="https://upload.wikimedia.org/wikipedia/commons/2/2b/BulbIcon.svg">
    <h3>Pattern 3:<br><code>&lt;img&gt;</code> + <code>role="img"</code> + <code>aria-label="[words]"</code></h3>
  </div>
  <div class="grid-item">
    <p id="caption1" class="visually-hidden">Lightbulb moment!</p>
    <img role="img" aria-labelledby="caption1" class="lightbulb" src="https://upload.wikimedia.org/wikipedia/commons/2/2b/BulbIcon.svg">
    <h3>Pattern 4:<br><code>&lt;img&gt;</code> + <code>role="img"</code> + <code>aria-labelledby="[ID]"</code></h3>
  </div>
</div>
<hr><br>
<h2>Using the &lt;svg&gt; tag</h2>
<div class="grid">
  <div class="grid-item">
    <svg role="img" version="1.1" class="darkblue" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 48 48" style="enable-background:new 0 0 48 48;" xml:space="preserve">
      <title>Lightbulb moment!</title>
      <path d="M19,39v-1h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19v-2h10v2h0.5c0.3,0,0.5,0.2,0.5,0.5S29.8,38,29.5,38H29v1h0.5
	c0.3,0,0.5,0.2,0.5,0.5S29.8,40,29.5,40H29c0,0-1.4,3-5,3s-5-3-5-3h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19z M20,39h8v-1h-8
	V39z M20.2,40c0.2,0.3,0.4,0.5,0.7,0.8c0.8,0.8,1.9,1.2,3.2,1.2s2.3-0.5,3.2-1.2c0.3-0.2,0.5-0.5,0.7-0.8H20.2L20.2,40z M20,37h8v-1
	h-8V37z M16.1,7.8c-0.1-0.2,0-0.5,0.2-0.7c0.2-0.1,0.5,0,0.7,0.2l1.6,3.2c0.1,0.2,0,0.5-0.2,0.7c-0.2,0.1-0.5,0-0.7-0.2
	C17.7,11,16.1,7.8,16.1,7.8z M30.2,7.4c0.1-0.2,0.4-0.4,0.7-0.2c0.2,0.1,0.4,0.4,0.2,0.7L29.5,11c-0.1,0.2-0.4,0.4-0.7,0.2
	c-0.2-0.1-0.4-0.4-0.2-0.7C28.6,10.6,30.2,7.4,30.2,7.4z M23.1,6c0-0.3,0.2-0.5,0.5-0.5s0.5,0.2,0.5,0.5v3.2c0,0.3-0.2,0.5-0.5,0.5
	s-0.5-0.2-0.5-0.5V6z M10.8,11.9c-0.2-0.2-0.2-0.5,0-0.7c0.2-0.2,0.5-0.2,0.7,0l2.3,2.4c0.2,0.2,0.2,0.5,0,0.7
	c-0.2,0.2-0.5,0.2-0.7,0C13.1,14.3,10.8,11.9,10.8,11.9z M7.9,17.7c-0.3-0.1-0.4-0.3-0.4-0.6c0.1-0.3,0.3-0.4,0.6-0.4c0,0,0,0,0,0
	l3.1,0.8c0.3,0.1,0.4,0.3,0.4,0.6c-0.1,0.3-0.3,0.4-0.6,0.4c0,0,0,0,0,0C11,18.5,7.9,17.7,7.9,17.7z M39.7,17.7l-3.1,0.8
	c-0.3,0.1-0.5-0.1-0.6-0.4c-0.1-0.3,0.1-0.5,0.3-0.6l3.1-0.8c0.3-0.1,0.5,0.1,0.6,0.4C40.1,17.4,40,17.6,39.7,17.7z M35.7,11.3
	c0.2-0.2,0.5-0.2,0.7,0c0.2,0.2,0.2,0.5,0,0.7c0,0,0,0,0,0l-2.3,2.4c-0.2,0.2-0.5,0.2-0.7,0c-0.2-0.2-0.2-0.5,0-0.7c0,0,0,0,0,0
	L35.7,11.3z M18.8,34c0-5.5-4.8-5.5-4.8-12.6c0-5,4.5-9.4,10-9.4s10,4.4,10,9.4c0,7.1-4.8,7.1-4.8,12.6H18.8z M28.2,33
	c0.2-1.8,0.8-3,2.1-4.7l0.4-0.6c1.6-2.1,2.2-3.5,2.2-6.3c0-4.5-4.1-8.4-9-8.4s-9,3.9-9,8.4c0,2.7,0.6,4.2,2.2,6.3l0.4,0.6
	c1.3,1.7,1.9,3,2.1,4.7C19.8,33,28.2,33,28.2,33z M21.4,15.9c0.3-0.1,0.5,0.1,0.6,0.3c0.1,0.2,0,0.5-0.3,0.6c-1.8,0.7-3.2,2.2-3.9,4
	c-0.1,0.3-0.4,0.4-0.6,0.3c-0.2-0.1-0.4-0.4-0.3-0.6C17.6,18.4,19.3,16.7,21.4,15.9z" />
    </svg>
    <h3>Pattern 5:<br><code>&lt;svg&gt;</code> + <code>role="img"</code> + <code>&lt;title&gt;</code></h3>
  </div>
  <div class="grid-item">
    <svg role="img" version="1.1" class="darkgreen" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 48 48" style="enable-background:new 0 0 48 48;" xml:space="preserve">
      <text class="visually-hidden" font-size="0">Lightbulb moment!</text>
      <path d="M19,39v-1h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19v-2h10v2h0.5c0.3,0,0.5,0.2,0.5,0.5S29.8,38,29.5,38H29v1h0.5
	c0.3,0,0.5,0.2,0.5,0.5S29.8,40,29.5,40H29c0,0-1.4,3-5,3s-5-3-5-3h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19z M20,39h8v-1h-8
	V39z M20.2,40c0.2,0.3,0.4,0.5,0.7,0.8c0.8,0.8,1.9,1.2,3.2,1.2s2.3-0.5,3.2-1.2c0.3-0.2,0.5-0.5,0.7-0.8H20.2L20.2,40z M20,37h8v-1
	h-8V37z M16.1,7.8c-0.1-0.2,0-0.5,0.2-0.7c0.2-0.1,0.5,0,0.7,0.2l1.6,3.2c0.1,0.2,0,0.5-0.2,0.7c-0.2,0.1-0.5,0-0.7-0.2
	C17.7,11,16.1,7.8,16.1,7.8z M30.2,7.4c0.1-0.2,0.4-0.4,0.7-0.2c0.2,0.1,0.4,0.4,0.2,0.7L29.5,11c-0.1,0.2-0.4,0.4-0.7,0.2
	c-0.2-0.1-0.4-0.4-0.2-0.7C28.6,10.6,30.2,7.4,30.2,7.4z M23.1,6c0-0.3,0.2-0.5,0.5-0.5s0.5,0.2,0.5,0.5v3.2c0,0.3-0.2,0.5-0.5,0.5
	s-0.5-0.2-0.5-0.5V6z M10.8,11.9c-0.2-0.2-0.2-0.5,0-0.7c0.2-0.2,0.5-0.2,0.7,0l2.3,2.4c0.2,0.2,0.2,0.5,0,0.7
	c-0.2,0.2-0.5,0.2-0.7,0C13.1,14.3,10.8,11.9,10.8,11.9z M7.9,17.7c-0.3-0.1-0.4-0.3-0.4-0.6c0.1-0.3,0.3-0.4,0.6-0.4c0,0,0,0,0,0
	l3.1,0.8c0.3,0.1,0.4,0.3,0.4,0.6c-0.1,0.3-0.3,0.4-0.6,0.4c0,0,0,0,0,0C11,18.5,7.9,17.7,7.9,17.7z M39.7,17.7l-3.1,0.8
	c-0.3,0.1-0.5-0.1-0.6-0.4c-0.1-0.3,0.1-0.5,0.3-0.6l3.1-0.8c0.3-0.1,0.5,0.1,0.6,0.4C40.1,17.4,40,17.6,39.7,17.7z M35.7,11.3
	c0.2-0.2,0.5-0.2,0.7,0c0.2,0.2,0.2,0.5,0,0.7c0,0,0,0,0,0l-2.3,2.4c-0.2,0.2-0.5,0.2-0.7,0c-0.2-0.2-0.2-0.5,0-0.7c0,0,0,0,0,0
	L35.7,11.3z M18.8,34c0-5.5-4.8-5.5-4.8-12.6c0-5,4.5-9.4,10-9.4s10,4.4,10,9.4c0,7.1-4.8,7.1-4.8,12.6H18.8z M28.2,33
	c0.2-1.8,0.8-3,2.1-4.7l0.4-0.6c1.6-2.1,2.2-3.5,2.2-6.3c0-4.5-4.1-8.4-9-8.4s-9,3.9-9,8.4c0,2.7,0.6,4.2,2.2,6.3l0.4,0.6
	c1.3,1.7,1.9,3,2.1,4.7C19.8,33,28.2,33,28.2,33z M21.4,15.9c0.3-0.1,0.5,0.1,0.6,0.3c0.1,0.2,0,0.5-0.3,0.6c-1.8,0.7-3.2,2.2-3.9,4
	c-0.1,0.3-0.4,0.4-0.6,0.3c-0.2-0.1-0.4-0.4-0.3-0.6C17.6,18.4,19.3,16.7,21.4,15.9z" />
    </svg>
    <h3>Pattern 6:<br><code>&lt;svg&gt;</code> + <code>role="img"</code> + <code>&lt;text&gt;</code></h3>
  </div>
  <div class="grid-item">
    <svg role="img" version="1.1" class="purple" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 48 48" style="enable-background:new 0 0 48 48;" xml:space="preserve">
      <title>Lightbulb moment!</title>
      <text class="visually-hidden" font-size="0">I have a great idea.</text>
      <path d="M19,39v-1h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19v-2h10v2h0.5c0.3,0,0.5,0.2,0.5,0.5S29.8,38,29.5,38H29v1h0.5
	c0.3,0,0.5,0.2,0.5,0.5S29.8,40,29.5,40H29c0,0-1.4,3-5,3s-5-3-5-3h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19z M20,39h8v-1h-8
	V39z M20.2,40c0.2,0.3,0.4,0.5,0.7,0.8c0.8,0.8,1.9,1.2,3.2,1.2s2.3-0.5,3.2-1.2c0.3-0.2,0.5-0.5,0.7-0.8H20.2L20.2,40z M20,37h8v-1
	h-8V37z M16.1,7.8c-0.1-0.2,0-0.5,0.2-0.7c0.2-0.1,0.5,0,0.7,0.2l1.6,3.2c0.1,0.2,0,0.5-0.2,0.7c-0.2,0.1-0.5,0-0.7-0.2
	C17.7,11,16.1,7.8,16.1,7.8z M30.2,7.4c0.1-0.2,0.4-0.4,0.7-0.2c0.2,0.1,0.4,0.4,0.2,0.7L29.5,11c-0.1,0.2-0.4,0.4-0.7,0.2
	c-0.2-0.1-0.4-0.4-0.2-0.7C28.6,10.6,30.2,7.4,30.2,7.4z M23.1,6c0-0.3,0.2-0.5,0.5-0.5s0.5,0.2,0.5,0.5v3.2c0,0.3-0.2,0.5-0.5,0.5
	s-0.5-0.2-0.5-0.5V6z M10.8,11.9c-0.2-0.2-0.2-0.5,0-0.7c0.2-0.2,0.5-0.2,0.7,0l2.3,2.4c0.2,0.2,0.2,0.5,0,0.7
	c-0.2,0.2-0.5,0.2-0.7,0C13.1,14.3,10.8,11.9,10.8,11.9z M7.9,17.7c-0.3-0.1-0.4-0.3-0.4-0.6c0.1-0.3,0.3-0.4,0.6-0.4c0,0,0,0,0,0
	l3.1,0.8c0.3,0.1,0.4,0.3,0.4,0.6c-0.1,0.3-0.3,0.4-0.6,0.4c0,0,0,0,0,0C11,18.5,7.9,17.7,7.9,17.7z M39.7,17.7l-3.1,0.8
	c-0.3,0.1-0.5-0.1-0.6-0.4c-0.1-0.3,0.1-0.5,0.3-0.6l3.1-0.8c0.3-0.1,0.5,0.1,0.6,0.4C40.1,17.4,40,17.6,39.7,17.7z M35.7,11.3
	c0.2-0.2,0.5-0.2,0.7,0c0.2,0.2,0.2,0.5,0,0.7c0,0,0,0,0,0l-2.3,2.4c-0.2,0.2-0.5,0.2-0.7,0c-0.2-0.2-0.2-0.5,0-0.7c0,0,0,0,0,0
	L35.7,11.3z M18.8,34c0-5.5-4.8-5.5-4.8-12.6c0-5,4.5-9.4,10-9.4s10,4.4,10,9.4c0,7.1-4.8,7.1-4.8,12.6H18.8z M28.2,33
	c0.2-1.8,0.8-3,2.1-4.7l0.4-0.6c1.6-2.1,2.2-3.5,2.2-6.3c0-4.5-4.1-8.4-9-8.4s-9,3.9-9,8.4c0,2.7,0.6,4.2,2.2,6.3l0.4,0.6
	c1.3,1.7,1.9,3,2.1,4.7C19.8,33,28.2,33,28.2,33z M21.4,15.9c0.3-0.1,0.5,0.1,0.6,0.3c0.1,0.2,0,0.5-0.3,0.6c-1.8,0.7-3.2,2.2-3.9,4
	c-0.1,0.3-0.4,0.4-0.6,0.3c-0.2-0.1-0.4-0.4-0.3-0.6C17.6,18.4,19.3,16.7,21.4,15.9z" />
    </svg>
    <h3>Pattern 7:<br><code>&lt;svg&gt;</code> + <code>role="img"</code> + <code>&lt;title&gt;</code> + <code>&lt;text&gt;</code></h3>
  </div>
  <div class="grid-item">
    <svg role="img" aria-labelledby="lightbulb8" version="1.1" class="ltpink" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 48 48" style="enable-background:new 0 0 48 48;" xml:space="preserve">
      <title id="lightbulb8">Lightbulb moment!</title>
      <path d="M19,39v-1h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19v-2h10v2h0.5c0.3,0,0.5,0.2,0.5,0.5S29.8,38,29.5,38H29v1h0.5
	c0.3,0,0.5,0.2,0.5,0.5S29.8,40,29.5,40H29c0,0-1.4,3-5,3s-5-3-5-3h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19z M20,39h8v-1h-8
	V39z M20.2,40c0.2,0.3,0.4,0.5,0.7,0.8c0.8,0.8,1.9,1.2,3.2,1.2s2.3-0.5,3.2-1.2c0.3-0.2,0.5-0.5,0.7-0.8H20.2L20.2,40z M20,37h8v-1
	h-8V37z M16.1,7.8c-0.1-0.2,0-0.5,0.2-0.7c0.2-0.1,0.5,0,0.7,0.2l1.6,3.2c0.1,0.2,0,0.5-0.2,0.7c-0.2,0.1-0.5,0-0.7-0.2
	C17.7,11,16.1,7.8,16.1,7.8z M30.2,7.4c0.1-0.2,0.4-0.4,0.7-0.2c0.2,0.1,0.4,0.4,0.2,0.7L29.5,11c-0.1,0.2-0.4,0.4-0.7,0.2
	c-0.2-0.1-0.4-0.4-0.2-0.7C28.6,10.6,30.2,7.4,30.2,7.4z M23.1,6c0-0.3,0.2-0.5,0.5-0.5s0.5,0.2,0.5,0.5v3.2c0,0.3-0.2,0.5-0.5,0.5
	s-0.5-0.2-0.5-0.5V6z M10.8,11.9c-0.2-0.2-0.2-0.5,0-0.7c0.2-0.2,0.5-0.2,0.7,0l2.3,2.4c0.2,0.2,0.2,0.5,0,0.7
	c-0.2,0.2-0.5,0.2-0.7,0C13.1,14.3,10.8,11.9,10.8,11.9z M7.9,17.7c-0.3-0.1-0.4-0.3-0.4-0.6c0.1-0.3,0.3-0.4,0.6-0.4c0,0,0,0,0,0
	l3.1,0.8c0.3,0.1,0.4,0.3,0.4,0.6c-0.1,0.3-0.3,0.4-0.6,0.4c0,0,0,0,0,0C11,18.5,7.9,17.7,7.9,17.7z M39.7,17.7l-3.1,0.8
	c-0.3,0.1-0.5-0.1-0.6-0.4c-0.1-0.3,0.1-0.5,0.3-0.6l3.1-0.8c0.3-0.1,0.5,0.1,0.6,0.4C40.1,17.4,40,17.6,39.7,17.7z M35.7,11.3
	c0.2-0.2,0.5-0.2,0.7,0c0.2,0.2,0.2,0.5,0,0.7c0,0,0,0,0,0l-2.3,2.4c-0.2,0.2-0.5,0.2-0.7,0c-0.2-0.2-0.2-0.5,0-0.7c0,0,0,0,0,0
	L35.7,11.3z M18.8,34c0-5.5-4.8-5.5-4.8-12.6c0-5,4.5-9.4,10-9.4s10,4.4,10,9.4c0,7.1-4.8,7.1-4.8,12.6H18.8z M28.2,33
	c0.2-1.8,0.8-3,2.1-4.7l0.4-0.6c1.6-2.1,2.2-3.5,2.2-6.3c0-4.5-4.1-8.4-9-8.4s-9,3.9-9,8.4c0,2.7,0.6,4.2,2.2,6.3l0.4,0.6
	c1.3,1.7,1.9,3,2.1,4.7C19.8,33,28.2,33,28.2,33z M21.4,15.9c0.3-0.1,0.5,0.1,0.6,0.3c0.1,0.2,0,0.5-0.3,0.6c-1.8,0.7-3.2,2.2-3.9,4
	c-0.1,0.3-0.4,0.4-0.6,0.3c-0.2-0.1-0.4-0.4-0.3-0.6C17.6,18.4,19.3,16.7,21.4,15.9z" />
    </svg>
    <h3>Pattern 8:<br><code>&lt;svg&gt;</code> + <code>role="img"</code> + <code>&lt;title&gt;</code> + <code>aria-labelledby="[ID]"</code></h3>
  </div>
  <div class="grid-item">
    <svg role="img" aria-describedby="lightbulb9" version="1.1" class="orange" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 48 48" style="enable-background:new 0 0 48 48;" xml:space="preserve">
      <title id="lightbulb9">Lightbulb moment!</title>
      <path d="M19,39v-1h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19v-2h10v2h0.5c0.3,0,0.5,0.2,0.5,0.5S29.8,38,29.5,38H29v1h0.5
	c0.3,0,0.5,0.2,0.5,0.5S29.8,40,29.5,40H29c0,0-1.4,3-5,3s-5-3-5-3h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19z M20,39h8v-1h-8
	V39z M20.2,40c0.2,0.3,0.4,0.5,0.7,0.8c0.8,0.8,1.9,1.2,3.2,1.2s2.3-0.5,3.2-1.2c0.3-0.2,0.5-0.5,0.7-0.8H20.2L20.2,40z M20,37h8v-1
	h-8V37z M16.1,7.8c-0.1-0.2,0-0.5,0.2-0.7c0.2-0.1,0.5,0,0.7,0.2l1.6,3.2c0.1,0.2,0,0.5-0.2,0.7c-0.2,0.1-0.5,0-0.7-0.2
	C17.7,11,16.1,7.8,16.1,7.8z M30.2,7.4c0.1-0.2,0.4-0.4,0.7-0.2c0.2,0.1,0.4,0.4,0.2,0.7L29.5,11c-0.1,0.2-0.4,0.4-0.7,0.2
	c-0.2-0.1-0.4-0.4-0.2-0.7C28.6,10.6,30.2,7.4,30.2,7.4z M23.1,6c0-0.3,0.2-0.5,0.5-0.5s0.5,0.2,0.5,0.5v3.2c0,0.3-0.2,0.5-0.5,0.5
	s-0.5-0.2-0.5-0.5V6z M10.8,11.9c-0.2-0.2-0.2-0.5,0-0.7c0.2-0.2,0.5-0.2,0.7,0l2.3,2.4c0.2,0.2,0.2,0.5,0,0.7
	c-0.2,0.2-0.5,0.2-0.7,0C13.1,14.3,10.8,11.9,10.8,11.9z M7.9,17.7c-0.3-0.1-0.4-0.3-0.4-0.6c0.1-0.3,0.3-0.4,0.6-0.4c0,0,0,0,0,0
	l3.1,0.8c0.3,0.1,0.4,0.3,0.4,0.6c-0.1,0.3-0.3,0.4-0.6,0.4c0,0,0,0,0,0C11,18.5,7.9,17.7,7.9,17.7z M39.7,17.7l-3.1,0.8
	c-0.3,0.1-0.5-0.1-0.6-0.4c-0.1-0.3,0.1-0.5,0.3-0.6l3.1-0.8c0.3-0.1,0.5,0.1,0.6,0.4C40.1,17.4,40,17.6,39.7,17.7z M35.7,11.3
	c0.2-0.2,0.5-0.2,0.7,0c0.2,0.2,0.2,0.5,0,0.7c0,0,0,0,0,0l-2.3,2.4c-0.2,0.2-0.5,0.2-0.7,0c-0.2-0.2-0.2-0.5,0-0.7c0,0,0,0,0,0
	L35.7,11.3z M18.8,34c0-5.5-4.8-5.5-4.8-12.6c0-5,4.5-9.4,10-9.4s10,4.4,10,9.4c0,7.1-4.8,7.1-4.8,12.6H18.8z M28.2,33
	c0.2-1.8,0.8-3,2.1-4.7l0.4-0.6c1.6-2.1,2.2-3.5,2.2-6.3c0-4.5-4.1-8.4-9-8.4s-9,3.9-9,8.4c0,2.7,0.6,4.2,2.2,6.3l0.4,0.6
	c1.3,1.7,1.9,3,2.1,4.7C19.8,33,28.2,33,28.2,33z M21.4,15.9c0.3-0.1,0.5,0.1,0.6,0.3c0.1,0.2,0,0.5-0.3,0.6c-1.8,0.7-3.2,2.2-3.9,4
	c-0.1,0.3-0.4,0.4-0.6,0.3c-0.2-0.1-0.4-0.4-0.3-0.6C17.6,18.4,19.3,16.7,21.4,15.9z" />
    </svg>
    <h3>Pattern 9:<br><code>&lt;svg&gt;</code> + <code>role="img"</code> + <code>&lt;title&gt;</code> + <code>aria-describedby="[ID]"</code></h3>
  </div>
  <div class="grid-item">
    <svg role="img" version="1.1" class="ltblue" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 48 48" style="enable-background:new 0 0 48 48;" xml:space="preserve">
      <title>Lightbulb moment!</title>
      <desc>I have a great idea.</desc>
      <path d="M19,39v-1h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19v-2h10v2h0.5c0.3,0,0.5,0.2,0.5,0.5S29.8,38,29.5,38H29v1h0.5
	c0.3,0,0.5,0.2,0.5,0.5S29.8,40,29.5,40H29c0,0-1.4,3-5,3s-5-3-5-3h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19z M20,39h8v-1h-8
	V39z M20.2,40c0.2,0.3,0.4,0.5,0.7,0.8c0.8,0.8,1.9,1.2,3.2,1.2s2.3-0.5,3.2-1.2c0.3-0.2,0.5-0.5,0.7-0.8H20.2L20.2,40z M20,37h8v-1
	h-8V37z M16.1,7.8c-0.1-0.2,0-0.5,0.2-0.7c0.2-0.1,0.5,0,0.7,0.2l1.6,3.2c0.1,0.2,0,0.5-0.2,0.7c-0.2,0.1-0.5,0-0.7-0.2
	C17.7,11,16.1,7.8,16.1,7.8z M30.2,7.4c0.1-0.2,0.4-0.4,0.7-0.2c0.2,0.1,0.4,0.4,0.2,0.7L29.5,11c-0.1,0.2-0.4,0.4-0.7,0.2
	c-0.2-0.1-0.4-0.4-0.2-0.7C28.6,10.6,30.2,7.4,30.2,7.4z M23.1,6c0-0.3,0.2-0.5,0.5-0.5s0.5,0.2,0.5,0.5v3.2c0,0.3-0.2,0.5-0.5,0.5
	s-0.5-0.2-0.5-0.5V6z M10.8,11.9c-0.2-0.2-0.2-0.5,0-0.7c0.2-0.2,0.5-0.2,0.7,0l2.3,2.4c0.2,0.2,0.2,0.5,0,0.7
	c-0.2,0.2-0.5,0.2-0.7,0C13.1,14.3,10.8,11.9,10.8,11.9z M7.9,17.7c-0.3-0.1-0.4-0.3-0.4-0.6c0.1-0.3,0.3-0.4,0.6-0.4c0,0,0,0,0,0
	l3.1,0.8c0.3,0.1,0.4,0.3,0.4,0.6c-0.1,0.3-0.3,0.4-0.6,0.4c0,0,0,0,0,0C11,18.5,7.9,17.7,7.9,17.7z M39.7,17.7l-3.1,0.8
	c-0.3,0.1-0.5-0.1-0.6-0.4c-0.1-0.3,0.1-0.5,0.3-0.6l3.1-0.8c0.3-0.1,0.5,0.1,0.6,0.4C40.1,17.4,40,17.6,39.7,17.7z M35.7,11.3
	c0.2-0.2,0.5-0.2,0.7,0c0.2,0.2,0.2,0.5,0,0.7c0,0,0,0,0,0l-2.3,2.4c-0.2,0.2-0.5,0.2-0.7,0c-0.2-0.2-0.2-0.5,0-0.7c0,0,0,0,0,0
	L35.7,11.3z M18.8,34c0-5.5-4.8-5.5-4.8-12.6c0-5,4.5-9.4,10-9.4s10,4.4,10,9.4c0,7.1-4.8,7.1-4.8,12.6H18.8z M28.2,33
	c0.2-1.8,0.8-3,2.1-4.7l0.4-0.6c1.6-2.1,2.2-3.5,2.2-6.3c0-4.5-4.1-8.4-9-8.4s-9,3.9-9,8.4c0,2.7,0.6,4.2,2.2,6.3l0.4,0.6
	c1.3,1.7,1.9,3,2.1,4.7C19.8,33,28.2,33,28.2,33z M21.4,15.9c0.3-0.1,0.5,0.1,0.6,0.3c0.1,0.2,0,0.5-0.3,0.6c-1.8,0.7-3.2,2.2-3.9,4
	c-0.1,0.3-0.4,0.4-0.6,0.3c-0.2-0.1-0.4-0.4-0.3-0.6C17.6,18.4,19.3,16.7,21.4,15.9z" />
    </svg>
    <h3>Pattern 10:<br><code>&lt;svg&gt;</code> + <code>role="img"</code> + <code>&lt;title&gt;</code> + <code>&lt;desc&gt;</code></h3>
  </div>
  <div class="grid-item">
    <svg role="img" aria-labelledby="lightbulb11 description11" version="1.1" class="hotpink" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 48 48" style="enable-background:new 0 0 48 48;" xml:space="preserve">
      <title id="lightbulb11">Lightbulb moment!</title>
      <desc id="description11">I have a great idea.</desc>
      <path d="M19,39v-1h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19v-2h10v2h0.5c0.3,0,0.5,0.2,0.5,0.5S29.8,38,29.5,38H29v1h0.5
	c0.3,0,0.5,0.2,0.5,0.5S29.8,40,29.5,40H29c0,0-1.4,3-5,3s-5-3-5-3h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19z M20,39h8v-1h-8
	V39z M20.2,40c0.2,0.3,0.4,0.5,0.7,0.8c0.8,0.8,1.9,1.2,3.2,1.2s2.3-0.5,3.2-1.2c0.3-0.2,0.5-0.5,0.7-0.8H20.2L20.2,40z M20,37h8v-1
	h-8V37z M16.1,7.8c-0.1-0.2,0-0.5,0.2-0.7c0.2-0.1,0.5,0,0.7,0.2l1.6,3.2c0.1,0.2,0,0.5-0.2,0.7c-0.2,0.1-0.5,0-0.7-0.2
	C17.7,11,16.1,7.8,16.1,7.8z M30.2,7.4c0.1-0.2,0.4-0.4,0.7-0.2c0.2,0.1,0.4,0.4,0.2,0.7L29.5,11c-0.1,0.2-0.4,0.4-0.7,0.2
	c-0.2-0.1-0.4-0.4-0.2-0.7C28.6,10.6,30.2,7.4,30.2,7.4z M23.1,6c0-0.3,0.2-0.5,0.5-0.5s0.5,0.2,0.5,0.5v3.2c0,0.3-0.2,0.5-0.5,0.5
	s-0.5-0.2-0.5-0.5V6z M10.8,11.9c-0.2-0.2-0.2-0.5,0-0.7c0.2-0.2,0.5-0.2,0.7,0l2.3,2.4c0.2,0.2,0.2,0.5,0,0.7
	c-0.2,0.2-0.5,0.2-0.7,0C13.1,14.3,10.8,11.9,10.8,11.9z M7.9,17.7c-0.3-0.1-0.4-0.3-0.4-0.6c0.1-0.3,0.3-0.4,0.6-0.4c0,0,0,0,0,0
	l3.1,0.8c0.3,0.1,0.4,0.3,0.4,0.6c-0.1,0.3-0.3,0.4-0.6,0.4c0,0,0,0,0,0C11,18.5,7.9,17.7,7.9,17.7z M39.7,17.7l-3.1,0.8
	c-0.3,0.1-0.5-0.1-0.6-0.4c-0.1-0.3,0.1-0.5,0.3-0.6l3.1-0.8c0.3-0.1,0.5,0.1,0.6,0.4C40.1,17.4,40,17.6,39.7,17.7z M35.7,11.3
	c0.2-0.2,0.5-0.2,0.7,0c0.2,0.2,0.2,0.5,0,0.7c0,0,0,0,0,0l-2.3,2.4c-0.2,0.2-0.5,0.2-0.7,0c-0.2-0.2-0.2-0.5,0-0.7c0,0,0,0,0,0
	L35.7,11.3z M18.8,34c0-5.5-4.8-5.5-4.8-12.6c0-5,4.5-9.4,10-9.4s10,4.4,10,9.4c0,7.1-4.8,7.1-4.8,12.6H18.8z M28.2,33
	c0.2-1.8,0.8-3,2.1-4.7l0.4-0.6c1.6-2.1,2.2-3.5,2.2-6.3c0-4.5-4.1-8.4-9-8.4s-9,3.9-9,8.4c0,2.7,0.6,4.2,2.2,6.3l0.4,0.6
	c1.3,1.7,1.9,3,2.1,4.7C19.8,33,28.2,33,28.2,33z M21.4,15.9c0.3-0.1,0.5,0.1,0.6,0.3c0.1,0.2,0,0.5-0.3,0.6c-1.8,0.7-3.2,2.2-3.9,4
	c-0.1,0.3-0.4,0.4-0.6,0.3c-0.2-0.1-0.4-0.4-0.3-0.6C17.6,18.4,19.3,16.7,21.4,15.9z" />
    </svg>
    <h3>Pattern 11:<br><code>&lt;svg&gt;</code> + <code>role="img"</code> + <code>&lt;title&gt;</code> + <code>&lt;desc&gt;</code> + <code>aria-labelledby="[ID]"</code></h3>
  </div>
  <div class="grid-item">
    <svg role="img" aria-describedby="lightbulb12 description12" version="1.1" class="ltgray" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" viewBox="0 0 48 48" style="enable-background:new 0 0 48 48;" xml:space="preserve">
      <title id="lightbulb12">Lightbulb moment!</title>
      <desc id="description12">I have a great idea.</desc>
      <path d="M19,39v-1h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19v-2h10v2h0.5c0.3,0,0.5,0.2,0.5,0.5S29.8,38,29.5,38H29v1h0.5
	c0.3,0,0.5,0.2,0.5,0.5S29.8,40,29.5,40H29c0,0-1.4,3-5,3s-5-3-5-3h-0.5c-0.3,0-0.5-0.2-0.5-0.5s0.2-0.5,0.5-0.5H19z M20,39h8v-1h-8
	V39z M20.2,40c0.2,0.3,0.4,0.5,0.7,0.8c0.8,0.8,1.9,1.2,3.2,1.2s2.3-0.5,3.2-1.2c0.3-0.2,0.5-0.5,0.7-0.8H20.2L20.2,40z M20,37h8v-1
	h-8V37z M16.1,7.8c-0.1-0.2,0-0.5,0.2-0.7c0.2-0.1,0.5,0,0.7,0.2l1.6,3.2c0.1,0.2,0,0.5-0.2,0.7c-0.2,0.1-0.5,0-0.7-0.2
	C17.7,11,16.1,7.8,16.1,7.8z M30.2,7.4c0.1-0.2,0.4-0.4,0.7-0.2c0.2,0.1,0.4,0.4,0.2,0.7L29.5,11c-0.1,0.2-0.4,0.4-0.7,0.2
	c-0.2-0.1-0.4-0.4-0.2-0.7C28.6,10.6,30.2,7.4,30.2,7.4z M23.1,6c0-0.3,0.2-0.5,0.5-0.5s0.5,0.2,0.5,0.5v3.2c0,0.3-0.2,0.5-0.5,0.5
	s-0.5-0.2-0.5-0.5V6z M10.8,11.9c-0.2-0.2-0.2-0.5,0-0.7c0.2-0.2,0.5-0.2,0.7,0l2.3,2.4c0.2,0.2,0.2,0.5,0,0.7
	c-0.2,0.2-0.5,0.2-0.7,0C13.1,14.3,10.8,11.9,10.8,11.9z M7.9,17.7c-0.3-0.1-0.4-0.3-0.4-0.6c0.1-0.3,0.3-0.4,0.6-0.4c0,0,0,0,0,0
	l3.1,0.8c0.3,0.1,0.4,0.3,0.4,0.6c-0.1,0.3-0.3,0.4-0.6,0.4c0,0,0,0,0,0C11,18.5,7.9,17.7,7.9,17.7z M39.7,17.7l-3.1,0.8
	c-0.3,0.1-0.5-0.1-0.6-0.4c-0.1-0.3,0.1-0.5,0.3-0.6l3.1-0.8c0.3-0.1,0.5,0.1,0.6,0.4C40.1,17.4,40,17.6,39.7,17.7z M35.7,11.3
	c0.2-0.2,0.5-0.2,0.7,0c0.2,0.2,0.2,0.5,0,0.7c0,0,0,0,0,0l-2.3,2.4c-0.2,0.2-0.5,0.2-0.7,0c-0.2-0.2-0.2-0.5,0-0.7c0,0,0,0,0,0
	L35.7,11.3z M18.8,34c0-5.5-4.8-5.5-4.8-12.6c0-5,4.5-9.4,10-9.4s10,4.4,10,9.4c0,7.1-4.8,7.1-4.8,12.6H18.8z M28.2,33
	c0.2-1.8,0.8-3,2.1-4.7l0.4-0.6c1.6-2.1,2.2-3.5,2.2-6.3c0-4.5-4.1-8.4-9-8.4s-9,3.9-9,8.4c0,2.7,0.6,4.2,2.2,6.3l0.4,0.6
	c1.3,1.7,1.9,3,2.1,4.7C19.8,33,28.2,33,28.2,33z M21.4,15.9c0.3-0.1,0.5,0.1,0.6,0.3c0.1,0.2,0,0.5-0.3,0.6c-1.8,0.7-3.2,2.2-3.9,4
	c-0.1,0.3-0.4,0.4-0.6,0.3c-0.2-0.1-0.4-0.4-0.3-0.6C17.6,18.4,19.3,16.7,21.4,15.9z" />
    </svg>
    <h3>Pattern 12:<br><code>&lt;svg&gt;</code> + <code>role="img"</code> + <code>&lt;title&gt;</code> + <code>&lt;desc&gt;</code> + <code>aria-describedby="[ID]"</code></h3>
  </div>
</div>
</div>
<p>Image source: <a href="https://commons.wikimedia.org/wiki/File:BulbIcon.svg" target="_blank">Wikimedia Commons</a></p>
</div>
<hr><br>
<h2>Testing Results</h2>
<h3>Table key</h3>
<ul>
  <li>Green = no restrictions</li>
  <li>Yellow = use with caution</li>
  <li>Red = not recommended</li>
</ul>
<table id="results">
  <colgroup>
    <col />
    <col />
    <col />
    <col />
    <col />
    <col />
    <col />
    <col />
    <col />
    <col />
    <col />
    <col />
    <col />
  </colgroup>
  <thead>
    <tr>
      <th scope="col">Testing Parameters</th>
      <th scope="col">Pattern 1</th>
      <th scope="col">Pattern 2</th>
      <th scope="col">Pattern 3</th>
      <th scope="col">Pattern 4</th>
      <th scope="col">Pattern 5</th>
      <th scope="col">Pattern 6</th>
      <th scope="col">Pattern 7</th>
      <th scope="col">Pattern 8</th>
      <th scope="col">Pattern 9</th>
      <th scope="col">Pattern 10</th>
      <th scope="col">Pattern 11</th>
      <th scope="col">Pattern 12</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <th scope="row" class="odd-row">
        <h4>Desktop: <br>macOS + Safari + VoiceOver</h4><br><em>(macOS v10 + Safari v14)</em>
      </th>
      <td class="stop">
        <em>Not focusable</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="stop">
        <em>image detected, but missing an alt description</em>
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;text&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;desc&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment! I have a great idea.
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;desc&gt; ignored</em>
      </td>
    </tr>
    <tr>
      <th scope="row" class="even-row">
        <h4>Desktop: <br>macOS + Chrome + VoiceOver</h4><br><em>(macOS v10 + Chrome v90)</em>
      </th>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="stop">
        To get missing image descriptions, open the context menu<br><br><em>image detected, but missing alt description</em>
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;text&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;desc&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment! I have a great idea.
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;desc&gt; ignored</em>
      </td>
    </tr>
    <tr>
      <th scope="row" class="odd-row">
        <h4>Desktop: <br>macOS + Firefox + VoiceOver</h4><br><em>(macOS v10 + Firefox v88)</em>
      </th>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="stop">
        <em>image detected, but missing alt description</em>
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;text&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;desc&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment! I have a great idea.
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;desc&gt; ignored</em>
      </td>
    </tr>
    <tr>
      <th scope="row" class="even-row">
        <h4>Desktop: <br>macOS + Edge + VoiceOver</h4><br><em>(macOS v10 + Edge v90)</em>
      </th>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="stop">
        <em>image detected, but missing alt description</em>
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;text&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;desc&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment! I have a great idea.
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;desc&gt; ignored</em>
      </td>
    </tr>
    <tr>
      <th scope="row" class="odd-row">
        <h4>Desktop: <br>Windows + Chrome + NVDA</h4><br><em>(Windows 10 + Chrome v71 + NVDA v2019)</em>
      </th>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="stop">
        To get missing image descriptions, open the context menu.<br><br><em>image detected, but missing alt description</em>
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;text&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="caution">
        Lightbulb moment! Lightbulb moment!<br><br><em>repeated alt description</em>
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;desc&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment! I have a great idea.
      </td>
      <td class="caution">
        Lightbulb moment! Lightbulb moment! I have a great idea.<br><br><em>repeated alt description</em>
      </td>
    </tr>
    <tr>
      <th scope="row" class="even-row">
        <h4>Desktop: <br>Windows + Firefox + NVDA</h4><br><em>(Windows 10 + Firefox v63 + NVDA v2019)</em>
      </th>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="stop">
        <em>Not focusable</em>
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;text&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment! I have a great idea.
      </td>
      <td class="caution">
        Lightbulb moment! I have a great idea. I have a great idea.<br><br><em>repeated alt description</em>
      </td>
      <td class="caution">
        Lightbulb moment! Lightbulb moment! I have a great idea.<br><br><em>repeated alt description</em>
      </td>
    </tr>
     <tr>
      <th scope="row" class="odd-row">
        <h4>Desktop: <br>Windows + Edge + NVDA</h4><br><em>(Windows 10 + Edge v90 + NVDA v2019)</em>
      </th>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="stop">
        <em>Not focusable</em>
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;text&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="caution">
        Lightbulb moment! Lightbulb moment!<br><br><em>repeated alt description</em>
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;desc&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment! I have a great idea.
      </td>
      <td class="caution">
        Lightbulb moment! Lightbulb moment! I have a great idea.<br><br><em>repeated alt description</em>
      </td>
    </tr>
    <tr>
      <th scope="row" class="even-row">
        <h4>Mobile: <br>iOS + Safari + VoiceOver</h4><br><em>(iOS v14 + Safari v14 + VoiceOver on an iPhone XR)</em>
      </th>
      <td class="stop">
        <em>Not focusable</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="caution">
        Lightbulb moment! Lightbulb moment!<br><br><em>repeated alt description</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="stop">
        <em>image detected, but missing alt description</em>
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;text&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment! I have a great idea.
      </td>
      <td class="caution">
        Lightbulb moment! I have a great idea. I have a great idea.<br><br><em>repeated alt description</em>
      </td>
      <td class="caution">
        Lightbulb moment! Lightbulb moment! I have a great idea.<br><br><em>repeated alt description</em>
      </td>
    </tr>
    <tr>
      <th scope="row" class="odd-row">
        <h4>
          <h4>Mobile: <br>iOS + Chrome + VoiceOver</h4><br><em>(iOS v14 + Chrome v87 + VoiceOver on an iPhone XR)</em>
      </th>
      <td class="stop">
        <em>Not focusable</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="caution">
        Lightbulb moment! Lightbulb moment!<br><br><em>repeated alt description</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="stop">
        <em>image detected, but missing alt description</em>
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;text&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment! I have a great idea.
      </td>
      <td class="caution">
        Lightbulb moment! I have a great idea. I have a great idea.<br><br><em>repeated alt description</em>
      </td>
      <td class="caution">
        Lightbulb moment! Lightbulb moment! I have a great idea.<br><br><em>repeated alt description</em>
      </td>
    </tr>
    <tr>
      <th scope="row" class="even-row">
        <h4>Mobile: <br>Android + Chrome + Talkback</h4><br><em>(Android v12 + Chrome v90 + TalkBack v9 on a Samsung Galaxy S9)</em>
      </th>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="caution">
        Lightbulb moment! Lightbulb moment!<br><br><em>repeated alt description</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="stop">
        <em>Not focusable</em>
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;text&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment! Lightbulb moment!
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;desc&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment! I have a great idea.
      </td>
      <td class="go">
        Lightbulb moment! Lightbulb moment! I have a great idea.
      </td>
    </tr>
    <tr>
      <th scope="row" class="odd-row">
        <h4>Mobile: <br>Android + Firefox + Talkback</h4><br><em>(Android v12 + Firefox v88 + TalkBack v9 on a Samsung Galaxy S9)</em>
      </th>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="caution">
        Lightbulb moment! Lightbulb moment!<br><br><em>repeated alt description</em>
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment! I have a great idea.
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="go">
        Lightbulb moment!
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;desc&gt; ignored</em>
      </td>
      <td class="go">
        Lightbulb moment! I have a great idea.
      </td>
      <td class="caution">
        Lightbulb moment!<br><br><em>&lt;desc&gt; ignored</em>
      </td>
    </tr>
  </tbody>
</table>
!

CSS 

              
                body {
  font-family: "Open Sans", sans-serif;
  margin: 2rem;
}

h4 {
  margin-top: 0.5rem;
  margin-bottom: 0.25rem;
}

.visually-hidden {
  position: absolute !important;
  height: 1px;
  width: 1px;
  overflow: hidden;
  clip: rect(1px, 1px, 1px, 1px);
  color: red;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  max-width: 90%;
  margin: 0 auto;
}

.grid-item {
  background-color: rgba(255, 255, 255, 0.8);
  padding: 2rem;
  text-align: center;
}

code {
  background-color: #444444;
  color: #ffffff;
  border-radius: 0.3rem;
  padding: 4px 5px 5px;
  white-space: nowrap;
  line-height: 2;
}

p {
  clear: both;
}

table {
  border-collapse: collapse;
  margin: 1rem;
}

col {
  border: 1px solid #444444;
}

tr {
  border-bottom: 1px solid #444444;
}

thead th {
  padding: 1rem;
  background-color: #444444;
  border-right: 1px solid #ffffff;
  color: #ffffff;
}

thead th:last-child {
  border-right: none;
}

td,
tbody th {
  padding: 1rem;
  text-align: left;
  vertical-align: top;
}

.odd-row {
  background: #c1c1c1;
}

.even-row {
  background: #eeeeee;
}

.go {
  background: #008000;
  color: #ffffff;
}

.caution {
  background: #f6d100;
}

.stop {
  background: #d40000;
  color: #ffffff;
}

/* Lightbulb colors */
.lightbulb {
  width: 100%;
}

.darkblue {
  fill: darkblue;
}

.darkgreen {
  fill: darkgreen;
}

.purple {
  fill: purple;
}

.ltpink {
  fill: pink;
}

.orange {
  fill: orange;
}

.ltblue {
  fill: lightblue;
}

.hotpink {
  fill: hotpink;
}

.ltgray {
  fill: gray;
}
!

JS
!
999px

Console