diff --git a/src/applications/auth/controller/oauthregistration/PhabricatorOAuthDefaultRegistrationController.php b/src/applications/auth/controller/oauthregistration/PhabricatorOAuthDefaultRegistrationController.php
index 9c8c157690..3f3c114d9d 100644
--- a/src/applications/auth/controller/oauthregistration/PhabricatorOAuthDefaultRegistrationController.php
+++ b/src/applications/auth/controller/oauthregistration/PhabricatorOAuthDefaultRegistrationController.php
@@ -107,7 +107,16 @@ final class PhabricatorOAuthDefaultRegistrationController
               'name' => $provider->getProviderKey().'-profile.jpg',
               'authorPHID' => $user->getPHID(),
             ));
-          $user->setProfileImagePHID($file->getPHID());
+          $xformer = new PhabricatorImageTransformer();
+
+          // Resize OAuth image to a reasonable size
+          $small_xformed = $xformer->executeProfileTransform(
+            $file,
+            $width = 50,
+            $min_height = 50,
+            $max_height = 50);
+
+          $user->setProfileImagePHID($small_xformed->getPHID());
         }
 
         try {
diff --git a/src/applications/people/controller/settings/panels/PhabricatorUserOAuthSettingsPanelController.php b/src/applications/people/controller/settings/panels/PhabricatorUserOAuthSettingsPanelController.php
index 8f8dbf8fd4..031112b9cd 100644
--- a/src/applications/people/controller/settings/panels/PhabricatorUserOAuthSettingsPanelController.php
+++ b/src/applications/people/controller/settings/panels/PhabricatorUserOAuthSettingsPanelController.php
@@ -217,7 +217,17 @@ final class PhabricatorUserOAuthSettingsPanelController
             'name' => $provider->getProviderKey().'-profile.jpg',
             'authorPHID' => $user->getPHID(),
           ));
-        $user->setProfileImagePHID($file->getPHID());
+
+        $xformer = new PhabricatorImageTransformer();
+
+        // Resize OAuth image to a reasonable size
+        $small_xformed = $xformer->executeProfileTransform(
+          $file,
+          $width = 50,
+          $min_height = 50,
+          $max_height = 50);
+
+        $user->setProfileImagePHID($small_xformed->getPHID());
         $user->save();
       } else {
         $error = 'Unable to retrieve image.';