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/bedMethyl.html src/hg/htdocs/goldenPath/help/bedMethyl.html
index b136a0cc330..f0fb1f1c04d 100755
--- src/hg/htdocs/goldenPath/help/bedMethyl.html
+++ src/hg/htdocs/goldenPath/help/bedMethyl.html
@@ -16,31 +16,31 @@
 
 <p>The bedMethyl  format  includes the information of a <b>BED 9</b> along with additional fields:</p>
 <ul>
 <li>Valid Coverage: Reads with valid modification call
 <li>Percent Modified: Percent of valid calls that are modified
 <li>Modified calls: Number of calls with a modified base
 <li>Canonical calls: Number of calls with a canonical base
 <li>Other modification calls: Number of calls with a modified base, other modifications
 <li>Reads with a deletion: Number of reads with a deletion at this reference position
 <li>Low-confidence calls: Number of calls where the probability of the call was below the threshold
 <li>Reads with a base mismatch: Number of reads with a base other than the canonical base for this modification
 <li>Reads with no modification call: Number of reads aligned to this reference position, with the correct canonical base, but without a base modification call
 </ul>
 
 <p class="text-center">
-<img "1080" height="148" src="../../images/bedMethylEx.jpg">
+<img "1080" height="148" alt="bedMethyl track showing DNA methylation levels colored from blue to red" src="../../images/bedMethylEx.jpg">
 </p>
 
 <p>The items are colored from <b><font color="#0000FF">0%</font></b> 
 methylated modified (blue) to
 <b><font color="#FF0000">100%</font></b> (red). Hovering over an item or
 clicking it shows the additional details found in bedMethyl. Methylation calls are shown
 separately for CpG sites (<b>m</b>) and non-CpG (CHG/CHH) sites (<b>h</b>).</p>
 
 <a name=bedMethyl></a>
 <h2>Creating a bedMethyl custom track</h2>
 <a name="example1"></a>
 <h3>Example #1</h3>
 <p>
 In this example, you will create a bedMethyl custom track using bedMethyl data for the hg38 assembly.</p>
 <ol>