diff --git a/content/post/hdr-image-analysis/index.en.md b/content/post/hdr-image-analysis/index.en.md
index d712b010fd..c10ba4f4ce 100644
--- a/content/post/hdr-image-analysis/index.en.md
+++ b/content/post/hdr-image-analysis/index.en.md
@@ -26,6 +26,14 @@ And there are also some entries in the "Börsenblatt des deutschen Buchhandels".
 
 This book also contains copies of stamp impressions. Some of the stamp colours used can be excited by UV radiation...
 
+{{< gallery >}}
+[
+  {"src": "img/presse.jpg", "alt": "Press"},
+  {"src": "img/front.jpg", "alt": "Book cover"},
+  {"src": "img/page.jpg", "alt": "Page"}
+]
+{{</ gallery >}}
+
 # Example
 
 {{< hdr-canvas-check >}}
diff --git a/content/post/hdr-image-analysis/index.md b/content/post/hdr-image-analysis/index.md
index ccf07885c5..53212c49d5 100644
--- a/content/post/hdr-image-analysis/index.md
+++ b/content/post/hdr-image-analysis/index.md
@@ -28,9 +28,9 @@ Dieses Buch enthält auch Kopien von Stempelabdrücken. Teilweise lässt sich di
 
 {{< gallery >}}
 [
-  {"src": "img/presse.jpg"},
-  {"src": "img/front.jpg"},
-  {"src": "img/page.jpg"}
+  {"src": "img/presse.jpg", "alt": "Presse"},
+  {"src": "img/front.jpg", "alt": "Buchdeckel"},
+  {"src": "img/page.jpg", "alt": "Seite"}
 ]
 {{</ gallery >}}