diff --git a/index.js b/index.js
index 8301356..2a3778e 100644
--- a/index.js
+++ b/index.js
@@ -95,6 +95,19 @@ module.exports.options = {
     watch: {
         default: false,
         runtimeParameter: 'watch'
+    },
+    serializers: {
+        default: {},
+        marks: {
+            default: {
+                annotations: {
+                    default: [],
+                },
+            }
+        },
+        types: {
+            default: {},
+        },
     }
 };
 
diff --git a/lib/sanity-util.js b/lib/sanity-util.js
index 2094843..b0ebd8e 100644
--- a/lib/sanity-util.js
+++ b/lib/sanity-util.js
@@ -17,13 +17,19 @@ function convertBlockToHTML({ blocks, cache, entriesById, options, visitedIds })
         return blockToHTML.h('img', { src: normalizedImage.url });
     };
 
+    const allSerializers = {
+      types: {
+          ...(options.serializers && options.serializers.types),
+          image: imageSerializer
+      },
+      marks: {
+          ...(options.serializers && options.serializers.marks)
+      }
+    }
+
     return blockToHTML({
         blocks,
-        serializers: {
-            types: {
-                image: imageSerializer
-            }
-        }
+        serializers: allSerializers,
     });
 }