diff --git a/routers/web/pages/pages.go b/routers/web/pages/pages.go
index e8fc1ae743..37e81ef7ec 100644
--- a/routers/web/pages/pages.go
+++ b/routers/web/pages/pages.go
@@ -11,8 +11,8 @@ import (
 	"fmt"
 	"html/template"
 	"image"
-	_ "image/jpeg"
-	_ "image/png"
+	_ "image/jpeg" // register JPEG decoder for social card background images
+	_ "image/png"  // register PNG decoder for social card background images
 	"io"
 	"math/big"
 	"net/http"