diff --git a/_Sidebar.md b/_Sidebar.md
index fdceed1..ee131e0 100644
--- a/_Sidebar.md
+++ b/_Sidebar.md
@@ -19,4 +19,8 @@
   - [Cache API](Cache-API)
     - [How to create a new Cache?](How-to-create-a-new-Cache)
     - [CacheInterface](CacheInterface)
+  - Format API
+    - How to create a new Format?
+    - [FormatInterface](FormatInterface)
+    - FormatAbstract
   - [Technical Recommendations](Technical-Recommendations)
\ No newline at end of file