diff --git a/web/backend/api/formats.py b/web/backend/api/formats.py
index 6c88699..9858611 100644
--- a/web/backend/api/formats.py
+++ b/web/backend/api/formats.py
@@ -3,7 +3,7 @@
 
 from fastapi import APIRouter
 
-from audio_splitter.constants import CONTAINER_INFO, CODEC_INFO
+from audio_splitter.constants import CONTAINER_INFO, CODEC_INFO, COMPATIBILITY_MATRIX
 
 router = APIRouter(prefix="/api", tags=["formats"])
 
@@ -11,9 +11,10 @@ router = APIRouter(prefix="/api", tags=["formats"])
 @router.get("/formats")
 async def get_formats():
     """
-    Return the list of supported containers and codecs.
+    Return the list of supported containers, codecs, and compatibility matrix.
     """
     return {
         "containers": CONTAINER_INFO,
         "codecs": CODEC_INFO,
+        "compatibility": COMPATIBILITY_MATRIX,
     }