diff --git a/contrib/search_api_attachments_commerce_product_reference/includes/callback_attachments_commerce_product_reference_settings.inc b/contrib/search_api_attachments_commerce_product_reference/includes/callback_attachments_commerce_product_reference_settings.inc
index 4a6ac18..60d7989 100644
--- a/contrib/search_api_attachments_commerce_product_reference/includes/callback_attachments_commerce_product_reference_settings.inc
+++ b/contrib/search_api_attachments_commerce_product_reference/includes/callback_attachments_commerce_product_reference_settings.inc
@@ -11,15 +11,6 @@ class SearchApiAttachmentsCommerceProductReferenceAlterSettings extends SearchAp
    * {@inheritdoc}
    */
   public function alterItems(array &$items) {
-    // Extension restriction.
-    $exclude = array();
-    foreach (explode(' ', $this->options['excluded_extensions']) as $ext) {
-      $exclude[$ext] = file_get_mimetype('dummy.' . $ext);
-    }
-
-    // File size restriction.
-    $max_file_size = parse_size($this->options['max_file_size']);
-
     // Get the entity reference fields.
     $product_reference_fields = $this->getProductReferenceFields();
 
@@ -52,21 +43,13 @@ class SearchApiAttachmentsCommerceProductReferenceAlterSettings extends SearchAp
                       $files = array_slice($files, 0, $this->options['number_indexed']);
                     }
                     foreach ($files as $file) {
-                      // Private file restriction.
-                      if (!$this->is_temporary($file) && !($this->options['excluded_private'] && $this->is_private($file))) {
-                        // Extension restriction.
-                        if (!in_array($file['filemime'], $exclude)) {
-                          // File size restriction.
-                          $file_size_errors = file_validate_size((object) $file, $max_file_size);
-                          if (empty($file_size_errors)) {
-                            $attachments = 'attachments_' . $file_field['field_name'];
-                            if (isset($item->{$attachments})) {
-                              $item->{$attachments} .= ' ' . $this->getFileContent($file);
-                            }
-                            else {
-                              $item->{$attachments} = $this->getFileContent($file);
-                            }
-                          }
+                      if ($this->isFileIndexable($file)) {
+                        $attachments = 'attachments_' . $file_field['field_name'];
+                        if (isset($item->{$attachments})) {
+                          $item->{$attachments} .= ' ' . $this->getFileContent($file);
+                        }
+                        else {
+                          $item->{$attachments} = $this->getFileContent($file);
                         }
                       }
                     }
diff --git a/contrib/search_api_attachments_entityreference/includes/callback_attachments_entityreference_settings.inc b/contrib/search_api_attachments_entityreference/includes/callback_attachments_entityreference_settings.inc
index 4cf94c7..8510a4f 100644
--- a/contrib/search_api_attachments_entityreference/includes/callback_attachments_entityreference_settings.inc
+++ b/contrib/search_api_attachments_entityreference/includes/callback_attachments_entityreference_settings.inc
@@ -11,15 +11,6 @@ class SearchApiAttachmentsEntityreferenceAlterSettings extends SearchApiAttachme
    * {@inheritdoc}
    */
   public function alterItems(array &$items) {
-    // Extension restriction.
-    $exclude = array();
-    foreach (explode(' ', $this->options['excluded_extensions']) as $ext) {
-      $exclude[$ext] = file_get_mimetype('dummy.' . $ext);
-    }
-
-    // File size restriction.
-    $max_file_size = parse_size($this->options['max_file_size']);
-
     // Get the entity reference fields.
     $entityreference_fields = $this->getEntityReferenceFields();
 
@@ -52,21 +43,13 @@ class SearchApiAttachmentsEntityreferenceAlterSettings extends SearchApiAttachme
                       $files = array_slice($files, 0, $this->options['number_indexed']);
                     }
                     foreach ($files as $file) {
-                      // Private file restriction.
-                      if (!$this->is_temporary($file) && !($this->options['excluded_private'] && $this->is_private($file))) {
-                        // Extension restriction.
-                        if (!in_array($file['filemime'], $exclude)) {
-                          // File size restriction.
-                          $file_size_errors = file_validate_size((object) $file, $max_file_size);
-                          if (empty($file_size_errors)) {
-                            $attachments = 'attachments_' . $file_field['field_name'];
-                            if (isset($item->{$attachments})) {
-                              $item->{$attachments} .= ' ' . $this->getFileContent($file);
-                            }
-                            else {
-                              $item->{$attachments} = $this->getFileContent($file);
-                            }
-                          }
+                      if ($this->isFileIndexable($file)) {
+                        $attachments = 'attachments_' . $file_field['field_name'];
+                        if (isset($item->{$attachments})) {
+                          $item->{$attachments} .= ' ' . $this->getFileContent($file);
+                        }
+                        else {
+                          $item->{$attachments} = $this->getFileContent($file);
                         }
                       }
                     }
diff --git a/contrib/search_api_attachments_field_collections/includes/callback_attachments_field_collections_settings.inc b/contrib/search_api_attachments_field_collections/includes/callback_attachments_field_collections_settings.inc
index 40ecafb..bd3bd95 100644
--- a/contrib/search_api_attachments_field_collections/includes/callback_attachments_field_collections_settings.inc
+++ b/contrib/search_api_attachments_field_collections/includes/callback_attachments_field_collections_settings.inc
@@ -11,15 +11,6 @@ class SearchApiAttachmentsFieldCollectionsAlterSettings extends SearchApiAttachm
    * {@inheritdoc}
    */
   public function alterItems(array &$items) {
-    // Extension restriction.
-    $exclude = array();
-    foreach (explode(' ', $this->options['excluded_extensions']) as $ext) {
-      $exclude[$ext] = file_get_mimetype('dummy.' . $ext);
-    }
-
-    // File size restriction.
-    $max_file_size = parse_size($this->options['max_file_size']);
-
     // Get the field collection bundles.
     $field_collections_instances = field_info_instances('field_collection_item');
     $field_collections = array_keys($field_collections_instances);
@@ -59,21 +50,13 @@ class SearchApiAttachmentsFieldCollectionsAlterSettings extends SearchApiAttachm
                         $files = array_slice($files, 0, $this->options['number_indexed']);
                       }
                       foreach ($files as $file) {
-                        // Private file restriction.
-                        if (!$this->is_temporary($file) && !($this->options['excluded_private'] && $this->is_private($file))) {
-                          // Extension restriction.
-                          if (!in_array($file['filemime'], $exclude)) {
-                            // File size restriction.
-                            $file_size_errors = file_validate_size((object) $file, $max_file_size);
-                            if (empty($file_size_errors)) {
-                              $attachments = 'attachments_' . $file_field;
-                              if (isset($item->{$attachments})) {
-                                $item->{$attachments} .= ' ' . $this->getFileContent($file);
-                              }
-                              else {
-                                $item->{$attachments} = $this->getFileContent($file);
-                              }
-                            }
+                        if ($this->isFileIndexable($file)) {
+                          $attachments = 'attachments_' . $file_field;
+                          if (isset($item->{$attachments})) {
+                            $item->{$attachments} .= ' ' . $this->getFileContent($file);
+                          }
+                          else {
+                            $item->{$attachments} = $this->getFileContent($file);
                           }
                         }
                       }
diff --git a/contrib/search_api_attachments_multifield/includes/callback_attachments_multifield_settings.inc b/contrib/search_api_attachments_multifield/includes/callback_attachments_multifield_settings.inc
index 03e7da7..7d32bfa 100644
--- a/contrib/search_api_attachments_multifield/includes/callback_attachments_multifield_settings.inc
+++ b/contrib/search_api_attachments_multifield/includes/callback_attachments_multifield_settings.inc
@@ -11,16 +11,6 @@ class SearchApiAttachmentsMultifieldAlterSettings extends SearchApiAttachmentsAl
    * {@inheritdoc}
    */
   public function alterItems(array &$items) {
-
-    // Extension restriction.
-    $exclude = array();
-    foreach (explode(' ', $this->options['excluded_extensions']) as $ext) {
-      $exclude[$ext] = file_get_mimetype('dummy.' . $ext);
-    }
-
-    // File size restriction.
-    $max_file_size = parse_size($this->options['max_file_size']);
-
     // Get the multifield bundles.
     $multifields_instances = field_info_instances('multifield');
     $multifields = array_keys($multifields_instances);
@@ -64,21 +54,13 @@ class SearchApiAttachmentsMultifieldAlterSettings extends SearchApiAttachmentsAl
                         $files = array_slice($files, 0, $this->options['number_indexed']);
                       }
                       foreach ($files as $file) {
-                        // Private file restriction.
-                        if (!$this->is_temporary($file) && !($this->options['excluded_private'] && $this->is_private($file))) {
-                          // Extension restriction.
-                          if (!in_array($file['filemime'], $exclude)) {
-                            // File size restriction.
-                            $file_size_errors = file_validate_size((object) $file, $max_file_size);
-                            if (empty($file_size_errors)) {
-                              $attachments = 'attachments_' . $file_field;
-                              if (isset($item->{$attachments})) {
-                                $item->{$attachments} .= ' ' . $this->getFileContent($file);
-                              }
-                              else {
-                                $item->{$attachments} = $this->getFileContent($file);
-                              }
-                            }
+                        if ($this->isFileIndexable($file)) {
+                          $attachments = 'attachments_' . $file_field;
+                          if (isset($item->{$attachments})) {
+                            $item->{$attachments} .= ' ' . $this->getFileContent($file);
+                          }
+                          else {
+                            $item->{$attachments} = $this->getFileContent($file);
                           }
                         }
                       }
diff --git a/contrib/search_api_attachments_references/includes/callback_attachments_references_settings.inc b/contrib/search_api_attachments_references/includes/callback_attachments_references_settings.inc
index 4163fd7..60d0442 100644
--- a/contrib/search_api_attachments_references/includes/callback_attachments_references_settings.inc
+++ b/contrib/search_api_attachments_references/includes/callback_attachments_references_settings.inc
@@ -11,15 +11,6 @@ class SearchApiAttachmentsReferencesAlterSettings extends SearchApiAttachmentsAl
    * {@inheritdoc}
    */
   public function alterItems(array &$items) {
-    // Extension restriction.
-    $exclude = array();
-    foreach (explode(' ', $this->options['excluded_extensions']) as $ext) {
-      $exclude[$ext] = file_get_mimetype('dummy.' . $ext);
-    }
-
-    // File size restriction.
-    $max_file_size = parse_size($this->options['max_file_size']);
-
     // Get the reference fields.
     $reference_fields = $this->getReferenceFields();
 
@@ -52,21 +43,13 @@ class SearchApiAttachmentsReferencesAlterSettings extends SearchApiAttachmentsAl
                       $files = array_slice($files, 0, $this->options['number_indexed']);
                     }
                     foreach ($files as $file) {
-                      // Private file restriction.
-                      if (!$this->is_temporary($file) && !($this->options['excluded_private'] && $this->is_private($file))) {
-                        // Extension restriction.
-                        if (!in_array($file['filemime'], $exclude)) {
-                          // File size restriction.
-                          $file_size_errors = file_validate_size((object) $file, $max_file_size);
-                          if (empty($file_size_errors)) {
-                            $attachments = 'attachments_' . $file_field['field_name'];
-                            if (isset($item->{$attachments})) {
-                              $item->{$attachments} .= ' ' . $this->getFileContent($file);
-                            }
-                            else {
-                              $item->{$attachments} = $this->getFileContent($file);
-                            }
-                          }
+                      if ($this->isFileIndexable($file)) {
+                        $attachments = 'attachments_' . $file_field['field_name'];
+                        if (isset($item->{$attachments})) {
+                          $item->{$attachments} .= ' ' . $this->getFileContent($file);
+                        }
+                        else {
+                          $item->{$attachments} = $this->getFileContent($file);
                         }
                       }
                     }
diff --git a/includes/callback_attachments_settings.inc b/includes/callback_attachments_settings.inc
index e9fc110..e0c6481 100644
--- a/includes/callback_attachments_settings.inc
+++ b/includes/callback_attachments_settings.inc
@@ -12,35 +12,14 @@ class SearchApiAttachmentsAlterSettings extends SearchApiAbstractAlterCallback {
 
   public function alterItems(array &$items) {
 
-    // Extension restriction.
-    $exclude = array();
-    foreach (explode(' ', $this->options['excluded_extensions']) as $ext) {
-      $exclude[$ext] = file_get_mimetype('dummy.' . $ext);
-    }
-
-    // File size restriction.
-    if (isset($this->options['max_file_size'])) {
-      $max_file_size = parse_size($this->options['max_file_size']);
-    }
-    else {
-      $max_file_size = '0';
-    }
     if ($this->index->getEntityType() == 'file') {
       foreach ($items as $id => &$item) {
         $file = array();
         foreach ($item as $key => $value) {
           $file[$key] = $value;
         }
-        // Private file restriction.
-        if (!$this->is_temporary($file) && !($this->options['excluded_private'] && $this->is_private($file))) {
-          // Extension restriction.
-          if (!in_array($file['filemime'], $exclude)) {
-            // File size restriction.
-            $file_size_errors = file_validate_size((object) $file, $max_file_size);
-            if (empty($file_size_errors)) {
-              $item->attachments_content = $this->getFileContent($file);
-            }
-          }
+        if ($this->isFileIndexable($file)) {
+          $item->attachments_content = $this->getFileContent($file);
         }
       }
     }
@@ -55,21 +34,13 @@ class SearchApiAttachmentsAlterSettings extends SearchApiAbstractAlterCallback {
                 $value = array_slice($value, 0, $this->options['number_indexed']);
               }
               foreach ($value as $file) {
-                // Private file restriction.
-                if (!$this->is_temporary($file) && !($this->options['excluded_private'] && $this->is_private($file))) {
-                  // Extension restriction.
-                  if (!in_array($file['filemime'], $exclude)) {
-                    // File size restriction.
-                    $file_size_errors = file_validate_size((object) $file, $max_file_size);
-                    if (empty($file_size_errors)) {
-                      $attachments = 'attachments_' . $name;
-                      if (isset($item->{$attachments})) {
-                        $item->{$attachments} .= ' ' . $this->getFileContent($file);
-                      }
-                      else {
-                        $item->{$attachments} = $this->getFileContent($file);
-                      }
-                    }
+                if ($this->isFileIndexable($file)) {
+                  $attachments = 'attachments_' . $name;
+                  if (isset($item->{$attachments})) {
+                    $item->{$attachments} .= ' ' . $this->getFileContent($file);
+                  }
+                  else {
+                    $item->{$attachments} = $this->getFileContent($file);
                   }
                 }
               }
@@ -80,6 +51,34 @@ class SearchApiAttachmentsAlterSettings extends SearchApiAbstractAlterCallback {
     }
   }
 
+  public function isFileIndexable($file) {
+    // Extension restriction.
+    $exclude = array();
+    foreach (explode(' ', $this->options['excluded_extensions']) as $ext) {
+      $exclude[$ext] = file_get_mimetype('dummy.' . $ext);
+    }
+
+    // File size restriction.
+    if (isset($this->options['max_file_size'])) {
+      $max_file_size = parse_size($this->options['max_file_size']);
+    }
+    else {
+      $max_file_size = '0';
+    }
+    // Private file restriction.
+    if (!$this->is_temporary($file) && !($this->options['excluded_private'] && $this->is_private($file))) {
+      // Extension restriction.
+      if (!in_array($file['filemime'], $exclude)) {
+        // File size restriction.
+        $file_size_errors = file_validate_size((object) $file, $max_file_size);
+        if (empty($file_size_errors)) {
+          return TRUE;
+        }
+      }
+    }
+    return FALSE;
+  }
+
   public function configurationForm() {
     $default = implode(' ', search_api_attachments_default_excluded());
     $form['excluded_extensions'] = array(