diff --git a/README.md b/README.md
index 6cf50ca..cf96191 100644
--- a/README.md
+++ b/README.md
@@ -22,6 +22,8 @@ support for
 - `![](foo.png){#img}`
 - `![](foo.svg){#svg}`
 - `![](foo.html){#demo}`
+- Automatic detection of filetypes based on file-extensions
+  - Id's may be changed/omitted in this case
 
 ### Styling