diff --git a/src/Plugin/Tamper/HTMLEntityEncode.php b/src/Plugin/Tamper/HTMLEntityEncode.php
new file mode 100644
index 0000000..babeec5
--- /dev/null
+++ b/src/Plugin/Tamper/HTMLEntityEncode.php
@@ -0,0 +1,60 @@
+<?php
+
+namespace Drupal\tamper\Plugin\Tamper;
+
+use Drupal\Core\Form\FormStateInterface;
+use Drupal\tamper\Exception\TamperException;
+use Drupal\tamper\TamperableItemInterface;
+use Drupal\tamper\TamperBase;
+use Drupal\Component\Utility\Html;
+
+/**
+ * Plugin implementation for html entity encode.
+ *
+ * @Tamper(
+ *   id = "html_entity_encode",
+ *   label = @Translation("HTML entity encode"),
+ *   description = @Translation("HTML entity encode."),
+ *   category = "Text"
+ * )
+ */
+class HTMLEntityEncode extends TamperBase {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function defaultConfiguration() {
+    $config = parent::defaultConfiguration();
+    return $config;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function buildConfigurationForm(array $form, FormStateInterface $form_state) {
+    $form['html'] = [
+      '#markup' => 'This will convert all HTML special characters such as &gt; and &amp; to &amp;gt; and &amp;apm;.',
+    ];
+
+    return $form;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function submitConfigurationForm(array &$form, FormStateInterface $form_state) {
+    parent::submitConfigurationForm($form, $form_state);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function tamper($data, TamperableItemInterface $item = NULL) {
+    if (!is_string($data)) {
+      throw new TamperException('Input should be a string.');
+    }
+
+    return Html::escape($data);
+  }
+
+}
diff --git a/tests/src/Unit/Plugin/Tamper/HTMLEntityEncodeTest.php b/tests/src/Unit/Plugin/Tamper/HTMLEntityEncodeTest.php
new file mode 100644
index 0000000..910a990
--- /dev/null
+++ b/tests/src/Unit/Plugin/Tamper/HTMLEntityEncodeTest.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace Drupal\Tests\tamper\Unit\Plugin\Tamper;
+
+use Drupal\tamper\Exception\TamperException;
+use Drupal\tamper\Plugin\Tamper\HTMLEntityEncode;
+use Drupal\Tests\UnitTestCase;
+
+/**
+ * Tests the convert case plugin.
+ *
+ * @group tamper
+ */
+class HTMLEntityEncodeTest extends UnitTestCase {
+
+  /**
+   * Test HTML entity encode.
+   */
+  public function testHTMLEntityEncode() {
+    $plugin = new HTMLEntityEncode([], 'html_entity_encode', []);
+    $this->assertEquals('&lt;html&gt;asdfsadfasf&lt;b&gt;asfasf&lt;/b&gt;&lt;/html&gt;', $plugin->tamper('<html>asdfsadfasf<b>asfasf</b></html>'));
+  }
+
+}
