diff --git a/modules/joex/src/main/resources/reference.conf b/modules/joex/src/main/resources/reference.conf
index 899620dc..b2303afb 100644
--- a/modules/joex/src/main/resources/reference.conf
+++ b/modules/joex/src/main/resources/reference.conf
@@ -679,7 +679,12 @@ Docpell Update Check
             mappings = [
               {
                 matches = "jpn_vert"
-                args = [ "-l", "jpn_vert", "--pdf-renderer", "sandwich", "--tesseract-pagesegmode", "5" ]
+                args = [ "-l", "jpn_vert", "--pdf-renderer", "sandwich", "--tesseract-pagesegmode", "5", "--output-type", "pdf" ]
+              },
+            # Japanese Mapping for OCR Optimization
+              {
+                matches = "jpn"
+                args = [ "-l", "jpn", "--output-type", "pdf" ]
               },
             # Start Other Custom Language Mappings Here
             # Default Mapping Below