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/hgGateway/hgGateway.html src/hg/hgGateway/hgGateway.html
index 83dd228cb7d..5231cb6a3bf 100644
--- src/hg/hgGateway/hgGateway.html
+++ src/hg/hgGateway/hgGateway.html
@@ -49,31 +49,31 @@
             <br>Search through thousands of genome assemblies
             <span id="speciesSearchInfo">
               <svg style="height:1.1em; vertical-align:top" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
                 <circle cx="12" cy="12" r="10" stroke="#1C274C" stroke-width="1.5"/>
                 <path d="M12 17V11" stroke="#1C274C" stroke-width="1.5" stroke-linecap="round"/>
                 <circle cx="1" cy="1" r="1" transform="matrix(1 0 0 -1 11 9)" fill="#1C274C"/>
               </svg>
             </span>
             <div>
               <input id="speciesSearch" value="" size=42>
             </div>
             <a href="/assemblySearch.html" id="assemblySearchLink" style="text-decoration: none;">
                 <div style="padding: 0px; display: flex; align-items: center; margin-top: 12px;">
                     <p style="margin: 0; padding-right: 0px; color: blue; text-decoration: underline;"
                        title="Not finding your assembly on the Gateway page? Visit the Genome assembly search and request page to request it. Ensure you have a GCA_ or GCF_ identifier from NCBI.">Unable to find a genome? Send us a request.</p>
-                    <img src="/images/magnify.png"
+                    <img alt="" src="/images/magnify.png"
                          style="height: 16px; width: 16px; margin-top: 0px; margin-left: 5px;"
                          title="Not finding your assembly on the Gateway page? Visit the Genome assembly search and request page to request it. Ensure you have a GCA_ or GCF_ identifier from NCBI.">
                 </div>
             </a>
           </div>
 
           <!-- Recent Genomes Panel (replaces species tree) -->
           <div id="recentGenomesTitle" class="jwSubsectionTitle" style="display: none;">
             Recent Genomes
             <span id="recentGenomesInfo">
               <svg style="height:1.1em; vertical-align:top" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
                 <circle cx="12" cy="12" r="10" stroke="#1C274C" stroke-width="1.5"/>
                 <path d="M12 17V11" stroke="#1C274C" stroke-width="1.5" stroke-linecap="round"/>
                 <circle cx="1" cy="1" r="1" transform="matrix(1 0 0 -1 11 9)" fill="#1C274C"/>
               </svg>