diff --git a/.gitignore b/.gitignore
index 76bb07737..ad34b8307 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,6 +20,7 @@ content/post/*/back/
 content/post/*/end/
 content/post/*/preview.*
 content/post/*/*.pdf
+content/**/ogPreview.*g
 content/files.lst
 **/.DS_Store
 static/fonts/**
diff --git a/config/_default/config.toml b/config/_default/config.toml
index bffd0105b..8b0dcd79e 100644
--- a/config/_default/config.toml
+++ b/config/_default/config.toml
@@ -13,7 +13,7 @@
         outputSuffix = ".jpg"
         format =  "svg"
         image = "front.jpg"
-        source = "file"
+        source = "post"
         [params.preview.size]
             height = 630
             width = 1200
diff --git a/content/post/hoert-auf-den-uhu/index.md b/content/post/hoert-auf-den-uhu/index.md
index 8d34f874e..82c167a75 100644
--- a/content/post/hoert-auf-den-uhu/index.md
+++ b/content/post/hoert-auf-den-uhu/index.md
@@ -13,90 +13,90 @@ tags:
   - BRD
   - Deutsch
 resources:
-- src: "front.jpg"
+- src: "front.jxl"
   name: front
   params:
     iiif: front/info.json
     class: front
-- src: "page000.jpg"
+- src: "page000.jxl"
   params:
     iiif: page000/info.json
-- src: "page001.jpg"
+- src: "page001.jxl"
   params:
     iiif: page001/info.json
-- src: "page002.jpg"
+- src: "page002.jxl"
   params:
     iiif: page002/info.json
-- src: "page003.jpg"
+- src: "page003.jxl"
   params:
     iiif: page003/info.json
-- src: "page004.jpg"
+- src: "page004.jxl"
   params:
     iiif: page004/info.json
-- src: "page005.jpg"
+- src: "page005.jxl"
   params:
     iiif: page005/info.json
-- src: "page006.jpg"
+- src: "page006.jxl"
   params:
     iiif: page006/info.json
-- src: "page007.jpg"
+- src: "page007.jxl"
   params:
     iiif: page007/info.json
-- src: "page008.jpg"
+- src: "page008.jxl"
   params:
     iiif: page008/info.json
-- src: "page009.jpg"
+- src: "page009.jxl"
   params:
     iiif: page009/info.json
-- src: "page010.jpg"
+- src: "page010.jxl"
   params:
     iiif: page010/info.json
-- src: "page011.jpg"
+- src: "page011.jxl"
   params:
     iiif: page011/info.json
-- src: "page012.jpg"
+- src: "page012.jxl"
   params:
     iiif: page012/info.json
-- src: "page013.jpg"
+- src: "page013.jxl"
   params:
     iiif: page013/info.json
-- src: "page014.jpg"
+- src: "page014.jxl"
   params:
     iiif: page014/info.json
-- src: "page015.jpg"
+- src: "page015.jxl"
   params:
     iiif: page015/info.json
-- src: "page016.jpg"
+- src: "page016.jxl"
   params:
     iiif: page016/info.json
-- src: "page017.jpg"
+- src: "page017.jxl"
   params:
     iiif: page017/info.json
-- src: "page018.jpg"
+- src: "page018.jxl"
   params:
     iiif: page018/info.json
-- src: "page019.jpg"
+- src: "page019.jxl"
   params:
     iiif: page019/info.json
-- src: "page020.jpg"
+- src: "page020.jxl"
   params:
     iiif: page020/info.json
-- src: "page021.jpg"
+- src: "page021.jxl"
   params:
     iiif: page021/info.json
-- src: "page022.jpg"
+- src: "page022.jxl"
   params:
     iiif: page022/info.json
-- src: "page023.jpg"
+- src: "page023.jxl"
   params:
     iiif: page023/info.json
-- src: "page024.jpg"
+- src: "page024.jxl"
   params:
     iiif: page024/info.json
-- src: "page025.jpg"
+- src: "page025.jxl"
   params:
     iiif: page025/info.json
-- src: "back.jpg"
+- src: "back.jxl"
   params:
     iiif: back/info.json
 ---
diff --git a/layouts/partials/html/head/og-image.html b/layouts/partials/html/head/og-image.html
index dc0adae69..810ff70d3 100644
--- a/layouts/partials/html/head/og-image.html
+++ b/layouts/partials/html/head/og-image.html
@@ -34,7 +34,7 @@
 {{- end -}}
 */}}
 
-{{/* This is jus a hack */}}
+{{/* This is just a hack */}}
 {{- if eq $previewImg nil -}}
   {{- $previewImg = partial "preview/preview-internal.html" (dict "context" .) -}}
 {{- end -}}
diff --git a/themes/projektemacher-base b/themes/projektemacher-base
index 4354d6a69..71d91bc37 160000
--- a/themes/projektemacher-base
+++ b/themes/projektemacher-base
@@ -1 +1 @@
-Subproject commit 4354d6a695c224952698fab54294c380998950ca
+Subproject commit 71d91bc37b5fda0017ba7046971b4ac54f759582