diff --git a/bin/encrypt b/bin/encrypt
index 087e2ad..12899e8 100755
--- a/bin/encrypt
+++ b/bin/encrypt
@@ -1,5 +1,7 @@
 #!/usr/bin/env ruby
 
+require "open3"
+
 file = ARGV.pop || raise("please supply a filename")
 
 raise("file '#{file}' does not exist") unless File.exist?(file)
@@ -13,7 +15,22 @@ raise("file '#{file}' does not exist") unless File.exist?(file)
     -iter 1000000
 )
 
-output = %[{{<dither #{ File.basename(file) } "782x600" />}}]
+caption_cmd = ["codex", "exec", "caption this image: #{file}"]
+caption_output, status = Open3.capture2e(*caption_cmd)
+
+unless status.success?
+  warn "Caption generation failed:\n#{caption_output}"
+  exit 1
+end
+
+caption = caption_output.split("\n").last.to_s.strip
+
+if caption.empty?
+  warn "Caption output was empty."
+  exit 1
+end
+
+output = %[{{<dither #{ File.basename(file) } "782x600">}}#{ caption }{{</dither>}}]
 
 IO.popen("pbcopy", "w") { |pb| pb.write(output) }
 
diff --git a/themes/v2/layouts/shortcodes/dither.html b/themes/v2/layouts/shortcodes/dither.html
index e2851bc..0f3be5f 100644
--- a/themes/v2/layouts/shortcodes/dither.html
+++ b/themes/v2/layouts/shortcodes/dither.html
@@ -4,10 +4,11 @@
 {{ $imgClass := .Get 2 }}
 
 <a href="{{ $img.RelPermalink }}">
-  <img src="{{ $img.RelPermalink }}" width="{{ $img.Width }}" height="{{ $img.Height }}" class="{{ $imgClass }}">
-  {{ with .Inner }}
-    <figcaption>
-      {{ . }}
-    </figcaption>
-  {{ end }}
+  <img
+    src="{{ $img.RelPermalink }}"
+    width="{{ $img.Width }}"
+    height="{{ $img.Height }}"
+    {{ with $imgClass }}class="{{ $imgClass }}"{{ end }}
+    {{ with .Inner }}alt="{{ . }}"{{ end }}
+  >
 </a>