diff --git a/LANGS.md b/LANGS.md
index 62616c14..6e55da87 100644
--- a/LANGS.md
+++ b/LANGS.md
@@ -3,4 +3,5 @@
 - [Türkiye](tr/)
 - [Français](fr/)
 - [Indonesian](id/)
-- [Español](es/)
\ No newline at end of file
+- [Español](es/)
+- [Deutsch](de/)
\ No newline at end of file
diff --git a/_layouts/website/languages.html b/_layouts/website/languages.html
index ddd4a2ac..1cd4ae29 100644
--- a/_layouts/website/languages.html
+++ b/_layouts/website/languages.html
@@ -45,12 +45,18 @@ <h2><i class="fas fa-language"></i> {{ "LANGS_CHOOSE"|t }}</h2>
                     <h3>{{ lang.title }}</h3>
                 </div>
                 <div class="card-actions">
-                    <a href="{{ (lang.id + "/README.md")|contentURL }}" class="action-btn preview">
-                        <i class="fas fa-eye"></i> Preview
-                    </a>
-                    <a href="https://github.com/sumn2u/learn-javascript/raw/main/books/book_{{ lang.id }}.pdf" class="action-btn download">
-                        <i class="fas fa-download"></i> PDF
-                    </a>
+                    {% if lang.id == 'de' %}
+                        <a href="{{ (lang.id + "/README.md")|contentURL }}" class="action-btn preview">
+                            <i class="fas fa-eye"></i> Preview
+                        </a>
+                    {% else %}
+                        <a href="{{ (lang.id + "/README.md")|contentURL }}" class="action-btn preview">
+                            <i class="fas fa-eye"></i> Preview
+                        </a>
+                        <a href="https://github.com/sumn2u/learn-javascript/raw/main/books/book_{{ lang.id }}.pdf" class="action-btn download">
+                            <i class="fas fa-download"></i> PDF
+                        </a>
+                    {% endif %}
                 </div>
             </div>
             {% endfor %}
diff --git a/book.json b/book.json
index 418da736..52502115 100644
--- a/book.json
+++ b/book.json
@@ -92,6 +92,10 @@
           {
             "config": "es",
             "text": "Español"
+          }, 
+          {
+            "config": "de",
+            "text": "Deutsch"
           }
         ]
       }
diff --git a/np/book.json b/np/book.json
index 38b3a07f..e23b575a 100644
--- a/np/book.json
+++ b/np/book.json
@@ -85,6 +85,10 @@
         {
           "config": "es",
           "text": "Español"
+        },
+        {
+          "config": "de",
+          "text": "Deutsch"
         }
       ]
     }
diff --git a/tr/book.json b/tr/book.json
index 030345a1..592e1524 100644
--- a/tr/book.json
+++ b/tr/book.json
@@ -86,6 +86,10 @@
           {
             "config": "es",
             "text": "Español"
+          },
+          {
+            "config": "de",
+            "text": "Deutsch"
           }
         ]
       }