diff --git a/src/JSLikeHTMLElement.php b/src/JSLikeHTMLElement.php
index 13b043a..798ac05 100644
--- a/src/JSLikeHTMLElement.php
+++ b/src/JSLikeHTMLElement.php
@@ -56,7 +56,8 @@ public function __set($name, $value)
                 $f = $this->ownerDocument->createDocumentFragment();
 
                 // appendXML() expects well-formed markup (XHTML)
-                $result = @$f->appendXML($value); // @ to suppress PHP warnings
+                // @ to suppress PHP warnings
+                $result = @$f->appendXML($value);
                 if ($result) {
                     if ($f->hasChildNodes()) {
                         $this->appendChild($f);
@@ -75,6 +76,7 @@ public function __set($name, $value)
 
                     if ($result) {
                         $import = $f->getElementsByTagName('htmlfragment')->item(0);
+
                         foreach ($import->childNodes as $child) {
                             $importedNode = $this->ownerDocument->importNode($child, true);
                             $this->appendChild($importedNode);
@@ -102,6 +104,7 @@ public function __get($name)
     {
         if ($name == 'innerHTML') {
             $inner = '';
+
             foreach ($this->childNodes as $child) {
                 $inner .= $this->ownerDocument->saveXML($child);
             }
diff --git a/src/Readability.php b/src/Readability.php
index d658a97..b40a544 100644
--- a/src/Readability.php
+++ b/src/Readability.php
@@ -250,17 +250,6 @@ public function getContent()
         return $this->articleContent;
     }
 
-    /**
-     * Add pre filter for raw input HTML processing.
-     *
-     * @param string RegExp for replace
-     * @param string (optional) Replacer
-     */
-    public function addPreFilter($filter, $replacer = '')
-    {
-        $this->pre_filters[$filter] = $replacer;
-    }
-
     /**
      * Add post filter for raw output HTML processing.
      *
@@ -302,7 +291,7 @@ public function init()
             }
         }
 
-        if ($bodyElems->length > 0 && $this->body == null) {
+        if ($bodyElems->length > 0 && $this->body === null) {
             $this->body = $bodyElems->item(0);
         }
 
@@ -385,12 +374,11 @@ public function postProcessContent(\DOMElement $articleContent)
      */
     protected function getArticleTitle()
     {
-        $origTitle = '';
-
         try {
             $curTitle = $origTitle = $this->getInnerText($this->dom->getElementsByTagName('title')->item(0));
         } catch (\Exception $e) {
             $curTitle = '';
+            $origTitle = '';
         }
 
         if (preg_match('/ [\|\-] /', $curTitle)) {
@@ -431,7 +419,7 @@ protected function prepDocument()
          * In some cases a body element can't be found (if the HTML is totally hosed for example)
          * so we create a new body node and append it to the document.
          */
-        if ($this->body == null) {
+        if ($this->body === null) {
             $this->body = $this->dom->createElement('body');
             $this->dom->documentElement->appendChild($this->body);
         }
@@ -571,7 +559,6 @@ public function prepArticle(\DOMElement $articleContent)
         $this->cleanConditionally($articleContent, 'form');
         $this->cleanConditionally($articleContent, 'table');
         $this->cleanConditionally($articleContent, 'ul');
-        //if (!$this->lightClean)
         $this->cleanConditionally($articleContent, 'div');
 
         // Remove extra paragraphs.
diff --git a/tests/ReadabilityTest.php b/tests/ReadabilityTest.php
index e9a0ef3..c74766f 100644
--- a/tests/ReadabilityTest.php
+++ b/tests/ReadabilityTest.php
@@ -215,6 +215,22 @@ public function testWithClasses()
         $this->assertNotContains('This text should be removed', $readability->getContent()->innerHTML);
     }
 
+    public function testWithClassesWithoutLightClean()
+    {
+        $readability = new ReadabilityTested('<article>'.str_repeat('<p>This is an awesome text with some links, here there are: <a href="http://0.0.0.0/test.html">the awesome</a></p>', 7).'<div style="display:none">'.str_repeat('<p class="clock">This text should be removed</p>', 10).'</div></article>', 'http://0.0.0.0');
+        $readability->debug = true;
+        $readability->lightClean = false;
+        $res = $readability->init();
+
+        $this->assertTrue($res);
+        $this->assertInstanceOf('Readability\JSLikeHTMLElement', $readability->getContent());
+        $this->assertInstanceOf('Readability\JSLikeHTMLElement', $readability->getTitle());
+        $this->assertContains('alt="article"', $readability->getContent()->innerHTML);
+        $this->assertEmpty($readability->getTitle()->innerHTML);
+        $this->assertContains('This is an awesome text with some links, here there are', $readability->getContent()->innerHTML);
+        $this->assertNotContains('This text should be removed', $readability->getContent()->innerHTML);
+    }
+
     public function testWithTd()
     {
         $readability = new ReadabilityTested('<table><tr>'.str_repeat('<td><p>This is an awesome text with some links, here there are the awesome</td>', 7).'</tr></table>', 'http://0.0.0.0');
@@ -429,7 +445,22 @@ public function testAppendIdAlreadyHere()
         $this->assertTrue($res);
         $this->assertInstanceOf('Readability\JSLikeHTMLElement', $readability->getContent());
         $this->assertInstanceOf('Readability\JSLikeHTMLElement', $readability->getTitle());
-        // $this->assertContains('<iframe src="https://www.youtube.com/embed/PUep6xNeKjA" width="560" height="315" frameborder="0" allowfullscreen="allowfullscreen"> </iframe>', $readability->getContent()->innerHTML);
-        // $this->assertContains('3D Touch', $readability->getTitle()->innerHTML);
+    }
+
+    public function testPostFilters()
+    {
+        $readability = new ReadabilityTested('<div>'.str_repeat('<p>This <b>is</b> the awesome content :)</p>', 7).'</div>', 'http://0.0.0.0');
+        $res = $readability->init();
+
+        $this->assertTrue($res);
+        $this->assertContains('This <strong>is</strong> the awesome content :)', $readability->getContent()->innerHTML);
+
+        $readability = new ReadabilityTested('<div>'.str_repeat('<p>This <b>is</b> the awesome content :)</p>', 7).'</div>', 'http://0.0.0.0');
+        $readability->addPostFilter('!<strong[^>]*>(.*?)</strong>!is', '');
+
+        $res = $readability->init();
+
+        $this->assertTrue($res);
+        $this->assertContains('This  the awesome content :)', $readability->getContent()->innerHTML);
     }
 }