diff --git a/flutter_quill_extensions/lib/utils/patterns.dart b/flutter_quill_extensions/lib/utils/patterns.dart
index 53c1650d..abb75171 100644
--- a/flutter_quill_extensions/lib/utils/patterns.dart
+++ b/flutter_quill_extensions/lib/utils/patterns.dart
@@ -1,5 +1,5 @@
 RegExp base64RegExp = RegExp(
-  r'^(?:[A-Za-z0-9+\/]{4})*(?:[A-Za-z0-9+\/]{2}==|[A-Za-z0-9+\/]{3}=|[A-Za-z0-9+\/]{4})$',
+  r'^(?:[A-Za-z0-9+\/][A-Za-z0-9+\/][A-Za-z0-9+\/][A-Za-z0-9+\/])*(?:[A-Za-z0-9+\/]{2}==|[A-Za-z0-9+\/]{3}=|[A-Za-z0-9+\/]{4})$',
 );
 
 final imageRegExp = RegExp(