diff --git a/src/Plugin/ImageEffect/BackgroundImageEffect.php b/src/Plugin/ImageEffect/BackgroundImageEffect.php
index a8b9ae5..080d75e 100644
--- a/src/Plugin/ImageEffect/BackgroundImageEffect.php
+++ b/src/Plugin/ImageEffect/BackgroundImageEffect.php
@@ -94,10 +94,10 @@ class BackgroundImageEffect extends ConfigurableImageEffectBase implements Conta
    * {@inheritdoc}
    */
   public function getSummary() {
-    $summary = array(
+    $summary = [
       '#theme' => 'image_effects_background_summary',
       '#data' => $this->configuration,
-    );
+    ];
     $summary += parent::getSummary();
 
     return $summary;
diff --git a/src/Plugin/ImageToolkit/Operation/imagemagick/Background.php b/src/Plugin/ImageToolkit/Operation/imagemagick/Background.php
new file mode 100644
index 0000000..2615aea
--- /dev/null
+++ b/src/Plugin/ImageToolkit/Operation/imagemagick/Background.php
@@ -0,0 +1,64 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\image_effects\Plugin\ImageToolkit\Operation\imagemagick\Background.
+ */
+
+namespace Drupal\image_effects\Plugin\ImageToolkit\Operation\imagemagick;
+
+use Drupal\imagemagick\Plugin\ImageToolkit\Operation\imagemagick\ImagemagickImageToolkitOperationBase;
+use Drupal\image_effects\Plugin\ImageToolkit\Operation\BackgroundTrait;
+
+/**
+ * Defines ImageMagick Background operation.
+ *
+ * @ImageToolkitOperation(
+ *   id = "image_effects_imagemagick_background",
+ *   toolkit = "imagemagick",
+ *   operation = "background",
+ *   label = @Translation("Background"),
+ *   description = @Translation("Places the source image over a background image.")
+ * )
+ */
+class Background extends ImagemagickImageToolkitOperationBase {
+
+  use BackgroundTrait;
+
+  /**
+   * {@inheritdoc}
+   */
+  protected function execute(array $arguments) {
+    // Reset any gravity settings from earlier effects.
+    $op = '-gravity None';
+
+    // Set transparent background.
+    $op .= " -background transparent";
+
+    // Set the dimensions of the background.
+    $w = $arguments['background_image']->getToolkit()->getWidth();
+    $h = $arguments['background_image']->getToolkit()->getHeight();
+    // Reverse offset sign. Offset arguments require a sign in front.
+    $x = $arguments['x_offset'] > 0 ? ('-' . $arguments['x_offset']) : ('+' . -$arguments['x_offset']);
+    $y = $arguments['y_offset'] > 0 ? ('-' . $arguments['y_offset']) : ('+' . -$arguments['y_offset']);
+    $op .= " -extent {$w}x{$h}{$x}{$y} ";
+
+    // Add the background image.
+    $op .= $this->getToolkit()->escapeShellArg($arguments['background_image']->getToolkit()->getSourceLocalPath());
+
+    // Compose it with the destination.
+    if ($arguments['opacity'] == 100) {
+      $op .= ' -compose dst-over -composite';
+    }
+    else {
+      $op .= " -compose blend -define compose:args=100,{$arguments['opacity']} -composite";
+    }
+
+    $this->getToolkit()
+      ->addArgument($op)
+      ->setWidth($w)
+      ->setHeight($h);
+    return TRUE;
+  }
+
+}
diff --git a/src/Tests/ImageEffectsBackgroundTest.php b/src/Tests/ImageEffectsBackgroundTest.php
index a828345..e0e3ec5 100644
--- a/src/Tests/ImageEffectsBackgroundTest.php
+++ b/src/Tests/ImageEffectsBackgroundTest.php
@@ -65,13 +65,13 @@ class ImageEffectsBackgroundTest extends ImageEffectsTestBase {
     $this->assertEqual(40, $image->getWidth());
     $this->assertEqual(20, $image->getHeight());
     $url = file_url_transform_relative($image_style->buildUrl($original_uri));
-    $variables = array(
+    $variables = [
       '#theme' => 'image_style',
       '#style_name' => 'image_effects_test',
       '#uri' => $original_uri,
       '#width' => $image->getWidth(),
       '#height' => $image->getHeight(),
-    );
+    ];
     $this->assertEqual('<img src="' . $url . '" width="360" height="240" alt="" class="image-style-image-effects-test" />', $this->getImageTag($variables));
 
     // Check that ::applyEffect generates image with expected canvas.
@@ -87,25 +87,45 @@ class ImageEffectsBackgroundTest extends ImageEffectsTestBase {
     // Remove effect.
     $this->removeEffectFromTestStyle($uuid);
 
-    // For the GD toolkit, test we are not left with orphan resource after
-    // applying the operation.
-    if ($image_factory->getToolkitId() === 'gd') {
-      $image = $image_factory->get($original_uri);
-      // Store the original GD resource.
-      $old_res = $image->getToolkit()->getResource();
-      // Apply the operation.
-      $image->apply('background', [
-        'x_offset' => 0,
-        'y_offset' => 0,
-        'opacity' => 100,
-        'background_image' => $image_factory->get($background_uri),
-      ]);
-      // The operation replaced the resource, check that the old one has
-      // been destroyed.
-      $new_res = $image->getToolkit()->getResource();
-      $this->assertTrue(is_resource($new_res));
-      $this->assertNotEqual($new_res, $old_res);
-      $this->assertFalse(is_resource($old_res));
+    // Toolkit-specific tests.
+    switch ($image_factory->getToolkitId()) {
+      case 'gd':
+        // For the GD toolkit, test we are not left with orphan resource after
+        // applying the operation.
+        $image = $image_factory->get($original_uri);
+        // Store the original GD resource.
+        $old_res = $image->getToolkit()->getResource();
+        // Apply the operation.
+        $image->apply('background', [
+          'x_offset' => 0,
+          'y_offset' => 0,
+          'opacity' => 100,
+          'background_image' => $image_factory->get($background_uri),
+        ]);
+        // The operation replaced the resource, check that the old one has
+        // been destroyed.
+        $new_res = $image->getToolkit()->getResource();
+        $this->assertTrue(is_resource($new_res));
+        $this->assertNotEqual($new_res, $old_res);
+        $this->assertFalse(is_resource($old_res));
+        break;
+
+      case 'imagemagick':
+        // For the Imagemagick toolkit, toolkit should return backround
+        // image dimensions after applying the operation, but before
+        // saving.
+        $image = $image_factory->get($original_uri);
+        // Apply the operation.
+        $image->apply('background', [
+          'x_offset' => 0,
+          'y_offset' => 0,
+          'opacity' => 100,
+          'background_image' => $image_factory->get($background_uri),
+        ]);
+        $this->assertEqual(360, $image->getToolkit()->getWidth());
+        $this->assertEqual(240, $image->getToolkit()->getHeight());
+        break;
+
     }
   }