diff --git a/docs/pages/versions/unversioned/sdk/webbrowser.md b/docs/pages/versions/unversioned/sdk/webbrowser.md
index 92d8a9492f045..4a9f0b7a0003c 100644
--- a/docs/pages/versions/unversioned/sdk/webbrowser.md
+++ b/docs/pages/versions/unversioned/sdk/webbrowser.md
@@ -68,12 +68,15 @@ Opens the url with Safari in a modal on iOS using [`SFSafariViewController`](htt
 - **browserParams (_object_)** (_optional_) --
   A dictionary with following key-value pairs:
 
-  - **toolbarColor (_optional_) (_string_)** -- color of the toolbar in either `#AARRGGBB` or `#RRGGBB` format.
-  - **enableBarCollapsing (_optional_) (_boolean_)** -- a boolean determining whether the toolbar should be hiding when a user scrolls the website
-  - **showInRecents (_optional_) (_boolean_)** -- (_Android only_) a boolean determining whether browsed website should be shown as separate entry in Android recents/multitasking view. Default: `false`
   - **controlsColor (_optional_) (_string_)** -- (_iOS only_) tint color for controls in SKSafariViewController in `#AARRGGBB` or `#RRGGBB` format.
-  - **showTitle (_optional_) (_boolean_)** -- (_Android only_) a boolean determining whether the browser should show the title of website on the toolbar
+  - **dismissButtonStyle (_optional_) (_string_)** -- (_iOS only_) The style of the dismiss button. Should be one of: `done`, `close`, or `cancel`.
+  - **enableBarCollapsing (_optional_) (_boolean_)** -- a boolean determining whether the toolbar should be hiding when a user scrolls the website.
+  - **enableDefaultShare (_optional_) (_boolean_)** -- (_Android only_) a boolean determining whether a default share item should be added to the menu.
   - **package (_optional_) (_string_)** -- (_Android only_). Package name of a browser to be used to handle Custom Tabs. List of available packages is to be queried by [getCustomTabsSupportingBrowsers](#webbrowsergetcustomtabssupportingbrowsers) method.
+  - **readerMode (_optional_) (_boolean_)** -- (_iOS only_) a boolean determining whether Safari should enter Reader mode, if it is available.
+  - **showInRecents (_optional_) (_boolean_)** -- (_Android only_) a boolean determining whether browsed website should be shown as separate entry in Android recents/multitasking view. Default: `false`
+  - **showTitle (_optional_) (_boolean_)** -- (_Android only_) a boolean determining whether the browser should show the title of website on the toolbar.
+  - **toolbarColor (_optional_) (_string_)** -- color of the toolbar in either `#AARRGGBB` or `#RRGGBB` format.
 
   Note that behavior customization options depend on the actual browser and its version. Some or all of the arguments may be ignored.
 
diff --git a/packages/expo-web-browser/android/src/main/java/expo/modules/webbrowser/WebBrowserModule.java b/packages/expo-web-browser/android/src/main/java/expo/modules/webbrowser/WebBrowserModule.java
index a26551baf3dc1..a089ab4b6b718 100644
--- a/packages/expo-web-browser/android/src/main/java/expo/modules/webbrowser/WebBrowserModule.java
+++ b/packages/expo-web-browser/android/src/main/java/expo/modules/webbrowser/WebBrowserModule.java
@@ -34,6 +34,7 @@ public class WebBrowserModule extends ExportedModule {
 
   private final static String SHOW_IN_RECENTS = "showInRecents";
 
+  private final static String DEFAULT_SHARE_MENU_ITEM_KEY = "enableDefaultShare";
   private final static String TOOLBAR_COLOR_KEY = "toolbarColor";
   private final static String ERROR_CODE = "EXWebBrowser";
   private static final String TAG = "ExpoWebBrowser";
@@ -163,6 +164,10 @@ private Intent createCustomTabsIntent(ReadableArguments arguments) {
 
     builder.setShowTitle(arguments.getBoolean(SHOW_TITLE_KEY, false));
 
+    if (arguments.hasKey(DEFAULT_SHARE_MENU_ITEM_KEY) && options.getBoolean(KEY_DEFAULT_SHARE_MENU_ITEM)) {
+      builder.addDefaultShareMenuItem();
+    }
+
     Intent intent = builder.build().intent;
 
     // We cannot use builder's method enableUrlBarHiding, because there is no corresponding disable method and some browsers enables it by default.
diff --git a/packages/expo-web-browser/ios/EXWebBrowser/EXWebBrowser.m b/packages/expo-web-browser/ios/EXWebBrowser/EXWebBrowser.m
index de03ab1583470..a536d017230bf 100644
--- a/packages/expo-web-browser/ios/EXWebBrowser/EXWebBrowser.m
+++ b/packages/expo-web-browser/ios/EXWebBrowser/EXWebBrowser.m
@@ -89,13 +89,29 @@ - (dispatch_queue_t)methodQueue
   }
 
   NSURL *url = [[NSURL alloc] initWithString:authURL];
+  BOOL readerMode = [arguments[@"readerMode"] boolValue];
+  BOOL enableBarCollapsing = [arguments[@"enableBarCollapsing"] boolValue];
   SFSafariViewController *safariVC = nil;
   if (@available(iOS 11, *)) {
     SFSafariViewControllerConfiguration *config = [[SFSafariViewControllerConfiguration alloc] init];
-    config.barCollapsingEnabled = [arguments[@"enableBarCollapsing"] boolValue];
+    config.barCollapsingEnabled = enableBarCollapsing;
+    config.entersReaderIfAvailable = readerMode;
     safariVC = [[SFSafariViewController alloc] initWithURL:url configuration:config];
   } else {
-    safariVC = [[SFSafariViewController alloc] initWithURL:url];
+    safariVC = [[SFSafariViewController alloc] initWithURL:url entersReaderIfAvailable:readerMode];
+  }
+
+  if (@available(iOS 11.0, *)) {
+    NSString *dismissButtonStyle = [arguments valueForKey:@"dismissButtonStyle"];
+    if ([dismissButtonStyle isEqualToString:@"done"]) {
+      safariVC.dismissButtonStyle = SFSafariViewControllerDismissButtonStyleDone;
+    }
+    else if ([dismissButtonStyle isEqualToString:@"close"]) {
+      safariVC.dismissButtonStyle = SFSafariViewControllerDismissButtonStyleClose;
+    }
+    else if ([dismissButtonStyle isEqualToString:@"cancel"]) {
+      safariVC.dismissButtonStyle = SFSafariViewControllerDismissButtonStyleCancel;
+    }
   }
 
   if([[arguments allKeys] containsObject:WebBrowserToolbarColorKey]) {
diff --git a/packages/expo-web-browser/src/WebBrowser.types.ts b/packages/expo-web-browser/src/WebBrowser.types.ts
index 7258b72a310bf..046b989941cac 100644
--- a/packages/expo-web-browser/src/WebBrowser.types.ts
+++ b/packages/expo-web-browser/src/WebBrowser.types.ts
@@ -9,10 +9,13 @@ export type WebBrowserOpenOptions = {
   showTitle?: boolean;
 
   /** Android only */
+  enableDefaultShare?: boolean;
   showInRecents?: boolean;
 
   /** iOS only */
   controlsColor?: string;
+  dismissButtonStyle?: 'done' | 'close' | 'cancel';
+  readerMode?: boolean;
 
   // Web
   windowName?: string;