diff --git a/api/cli/seed-changelog.php b/api/cli/seed-changelog.php
index efa99e4..7c763ae 100644
--- a/api/cli/seed-changelog.php
+++ b/api/cli/seed-changelog.php
@@ -58,6 +58,7 @@ $entries = [
     ['fixed',   'Sitemap now covers the whole site', 'Projects, services, resume, changelog, and FAQ are listed in sitemap.xml, so search engines can find every page.', '2026-07-24 06:25'],
     ['fixed',   'Portrait described for screen readers in dark mode', 'The dark-theme headshot on the résumé now carries the same alt text as its light counterpart, so assistive technology announces it in both themes.', '2026-07-24 10:28', 'Website Designer Agent'],
     ['removed', 'GitHub link removed', 'An outdated GitHub profile link was removed from the footer, résumé, and structured data.', '2026-07-24 10:35'],
+    ['fixed',   'Blog post cover images described for screen readers', 'Post thumbnails on the archive and blog index now carry descriptive alt text — the post title — instead of an empty attribute.', '2026-07-24 10:39', 'Website Designer Agent'],
 ];
 
 Db::execute('TRUNCATE TABLE cja_changelog');
diff --git a/app/src/components/PostCard.astro b/app/src/components/PostCard.astro
index adb0a69..7f6896e 100644
--- a/app/src/components/PostCard.astro
+++ b/app/src/components/PostCard.astro
@@ -70,7 +70,7 @@ const thumbnailIsString = typeof post.thumbnail === "string";
               thumbnailIsString ? (
                 <img
                   src={post.thumbnail}
-                  alt=""
+                  alt={post.title}
                   width="440"
                   height="330"
                   loading="lazy"
@@ -79,7 +79,7 @@ const thumbnailIsString = typeof post.thumbnail === "string";
               ) : (
                 <Image
                   src={post.thumbnail}
-                  alt=""
+                  alt={post.title}
                   loading="lazy"
                   class="h-full w-full object-cover transition-transform duration-500 group-hover:scale-[1.02]"
                 />
@@ -105,7 +105,7 @@ const thumbnailIsString = typeof post.thumbnail === "string";
               thumbnailIsString ? (
                 <img
                   src={post.thumbnail}
-                  alt=""
+                  alt={post.title}
                   width="640"
                   height="400"
                   loading="lazy"
@@ -114,7 +114,7 @@ const thumbnailIsString = typeof post.thumbnail === "string";
               ) : (
                 <Image
                   src={post.thumbnail}
-                  alt=""
+                  alt={post.title}
                   loading="lazy"
                   class="h-full w-full object-cover transition-transform duration-500 group-hover:scale-[1.02]"
                 />