5709a7858d5c197721be66d5218a79124abadb70
lrnassar
  Tue Mar 17 08:46:31 2026 -0700
Adding alt text to images across static documentation pages, CGI headers, markdown docs, and Pandoc templates. Content images receive AI-generated descriptive alt text; decorative images (icons, spacers, toggles) receive alt="" per WCAG best practice. Also adds Image Descriptions section to the accessibility page, and fixes Pandoc Lua writers to output alt attributes. 67 files, covering help docs, news archive, ENCODE pages, portal pages, and session examples. refs #37254

diff --git src/hg/htdocs/goldenPath/help/covidBrowser.html src/hg/htdocs/goldenPath/help/covidBrowser.html
index feb989ef598..23f78e53f3f 100755
--- src/hg/htdocs/goldenPath/help/covidBrowser.html
+++ src/hg/htdocs/goldenPath/help/covidBrowser.html
@@ -24,31 +24,31 @@
 <ul>
 <li><a href="#nav">Orientation and Navigation</a></li>
 <li><a href="#genes">Gene Data and Sequence Alignments</a></li>
 <li><a href="#var">Variation and Immunology data</a></li>
 <li><a href="#usher">Phylogenetic Contact Tracing using USHER</a></li>
 <li><a href="#data">Other tools and data downloads</a></li>
 <li><a href="#support">Support and Collaboration</a></li>
 </ul>
 <p>
 For those who prefer a video explanation, we also have the following tutorial:</p>
  </div>
  <div class="col-md-6">
      <p>
 <!--#if expr="${SERVER_NAME} = /-china/" -->
     <a href='../../../videos/UCQnUJepyNOw0p8s2otX4RYQ.mp4'>
-    <img src=../../images/videoIcon.png></a>
+    <img alt="" src=../../images/videoIcon.png></a>
     &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
     SARS-CoV2 Browser Tutorial Video
     - for other videos, see our <a href="/videos/" target="_blank">Video Page</a>.
 <!--#else -->
 <iframe width="560" height="350" src="https://www.youtube.com/embed/UCQnUJepyNOw0p8s2otX4RYQ?rel=0" 
 frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" 
 allowfullscreen></iframe> </p>
 <p> Visit our <a href="https://www.youtube.com/channel/UCQnUJepyNOw0p8s2otX4RYQ/videos"
 target="_blank">YouTube channel</a> for more videos.
 <!--#endif -->
      </p>
  </div>
 </div>