Index: wp-admin/press-this.php
===================================================================
--- wp-admin/press-this.php	(revision 8331)
+++ wp-admin/press-this.php	(working copy)
@@ -183,7 +183,7 @@
 
 		$host = parse_url($uri);
 
-		$pattern = '/<img ([^>]*)src=(\"|\')([^<>]+?\.(png|jpeg|jpg|jpe|gif))(\2)([^>\/]*)\/*>/is';
+		$pattern = '/<img ([^>]*)src=(\"|\')([^<>]+?\.(png|jpeg|jpg|jpe|gif)[^<>\'\"]*)(\2)([^>\/]*)\/*>/is';
 		preg_match_all($pattern, $content, $matches);
 
 		if ( empty($matches[1]) ) return '';