diff --git a/README.md b/README.md
index 1be5cb6..fd5f6a7 100644
--- a/README.md
+++ b/README.md
@@ -38,6 +38,10 @@ const result = unfurl('https://github.com/trending')
 #### result is `<Promise<Metadata>>`
 ```typescript
 type Metadata = {
+  title?: string
+  description?: string
+  keywords?: string[]
+  favicon?: string
   oEmbed?: {
     type: 'photo' | 'video' | 'link' | 'rich'
     version?: string
@@ -47,11 +51,11 @@ type Metadata = {
     provider_name?: string
     provider_url?: string
     cache_age?: number
-    thumbnails?: {
+    thumbnails?: [{
       url?: string
       width?: number
       height?: number
-    }[]
+    }]
   }
   twitter_card: {
     card: string
@@ -82,7 +86,7 @@ type Metadata = {
         name: string
         url: string
       }
-    },
+    }
     images: {
       url: string
       alt: string
@@ -102,7 +106,7 @@ type Metadata = {
     audio?: {
       url: string
       secure_url?: string
-      type: string 
+      type: string
     }[]
     description?: string
     determiner?: string
diff --git a/src/types.ts b/src/types.ts
index c9c6ac2..f31443c 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -14,10 +14,10 @@ export type Opts = {
 }
 
 export type Metadata = {
-  title: string
-  description: string
-  keywords: string[]
-  favicon: string
+  title?: string
+  description?: string
+  keywords?: string[]
+  favicon?: string
   oEmbed?: {
     type: 'photo' | 'video' | 'link' | 'rich'
     version?: string
@@ -67,7 +67,7 @@ export type Metadata = {
       url: string
       alt: string
     }[]
-  }[]
+  }
   open_graph: {
     title: string
     type: string
@@ -95,5 +95,5 @@ export type Metadata = {
       width?: number
       tags?: string[]
     }[]
-  }[]
+  }
 }