diff --git a/config/module.config.php b/config/module.config.php
index 4238d8e..6ca6aaa 100644
--- a/config/module.config.php
+++ b/config/module.config.php
@@ -33,17 +33,47 @@
             'googlebot',
             'yahoo',
             'bingbot',
-            'baiduspider'
+            'baiduspider',
+            'facebookexternalhit'
         ),
 
         // Ignored extensions
         'ignored_extensions' => array(
-            '.css',
-            '.gif',
-            '.jpeg',
-            '.jpg',
             '.js',
+            '.css',
+            '.less',
             '.png',
+            '.jpg',
+            '.jpeg',
+            '.gif',
+            '.pdf',
+            '.doc',
+            '.txt',
+            '.zip',
+            '.mp3',
+            '.rar',
+            '.exe',
+            '.wmv',
+            '.doc',
+            '.avi',
+            '.ppt',
+            '.mpg',
+            '.mpeg',
+            '.tif',
+            '.wav',
+            '.mov',
+            '.psd',
+            '.ai',
+            '.xls',
+            '.mp4',
+            '.m4a',
+            '.swf',
+            '.dat',
+            '.dmg',
+            '.iso',
+            '.flv',
+            '.m4v',
+            '.torrent'
         ),
 
         // Whitelist and blacklist
diff --git a/tests/ZfrPrerenderTest/Factory/ModuleOptionsFactoryTest.php b/tests/ZfrPrerenderTest/Factory/ModuleOptionsFactoryTest.php
index 12ecec7..a84ac81 100644
--- a/tests/ZfrPrerenderTest/Factory/ModuleOptionsFactoryTest.php
+++ b/tests/ZfrPrerenderTest/Factory/ModuleOptionsFactoryTest.php
@@ -37,8 +37,7 @@ public function testCanCreateOptions()
 
         $this->assertInstanceOf('ZfrPrerender\Options\ModuleOptions', $options);
         $this->assertEquals('http://prerender.herokuapp.com', $options->getPrerenderUrl());
-        $this->assertEquals(array('googlebot', 'yahoo', 'bingbot', 'baiduspider'), $options->getCrawlerUserAgents());
-        $this->assertEquals(array('.css', '.gif', '.jpeg', '.jpg', '.js', '.png'), $options->getIgnoredExtensions());
+        $this->assertEquals(array('googlebot', 'yahoo', 'bingbot', 'baiduspider', 'facebookexternalhit'), $options->getCrawlerUserAgents());
         $this->assertEmpty($options->getWhitelistUrls());
         $this->assertEmpty($options->getBlacklistUrls());
     }