diff --git a/src/wp-includes/class-wp-image-editor-imagick.php b/src/wp-includes/class-wp-image-editor-imagick.php
index fc6fc933ae..8f9b43cb89 100644
--- a/src/wp-includes/class-wp-image-editor-imagick.php
+++ b/src/wp-includes/class-wp-image-editor-imagick.php
@@ -146,10 +146,10 @@ class WP_Image_Editor_Imagick extends WP_Image_Editor {
 
 		try {
 			$this->image = new Imagick();
-			$file_parts = pathinfo( $this->file );
+			$file_extension = strtolower( pathinfo( $this->file, PATHINFO_EXTENSION ) );
 			$filename = $this->file;
 
-			if ( 'pdf' == strtolower( $file_parts['extension'] ) ) {
+			if ( 'pdf' == $file_extension ) {
 				$filename = $this->pdf_setup();
 			}
 
diff --git a/tests/phpunit/data/images/test-image-no-extension b/tests/phpunit/data/images/test-image-no-extension
new file mode 100644
index 0000000000..8fad364479
Binary files /dev/null and b/tests/phpunit/data/images/test-image-no-extension differ
diff --git a/tests/phpunit/tests/image/editor_gd.php b/tests/phpunit/tests/image/editor_gd.php
index 21f54656f1..ecb599e839 100644
--- a/tests/phpunit/tests/image/editor_gd.php
+++ b/tests/phpunit/tests/image/editor_gd.php
@@ -542,4 +542,15 @@ class Tests_Image_Editor_GD extends WP_Image_UnitTestCase {
                 unlink( $save_to_file );
 
 	}
+
+	/**
+	 * Test WP_Image_Editor_GD handles extension-less images
+	 * @ticket 39195
+	 */
+	public function test_image_non_existent_extension() {
+		$image_editor = new WP_Image_Editor_GD( DIR_TESTDATA.'/images/test-image-no-extension' );
+		$result = $image_editor->load();
+
+		$this->assertTrue( $result );
+	}
 }
diff --git a/tests/phpunit/tests/image/editor_imagick.php b/tests/phpunit/tests/image/editor_imagick.php
index d1766b9ff0..c475201c41 100644
--- a/tests/phpunit/tests/image/editor_imagick.php
+++ b/tests/phpunit/tests/image/editor_imagick.php
@@ -531,4 +531,15 @@ class Tests_Image_Editor_Imagick extends WP_Image_UnitTestCase {
 		$this->assertImageAlphaAtPointImagick( $save_to_file, array( 0, 0 ), $pre_rotate_alpha );
 		unlink( $save_to_file );
 	}
+
+	/**
+	 * Test WP_Image_Editor_Imagick handles extension-less images
+	 * @ticket 39195
+	 */
+	public function test_image_non_existent_extension() {
+		$image_editor = new WP_Image_Editor_Imagick( DIR_TESTDATA.'/images/test-image-no-extension' );
+		$result = $image_editor->load();
+
+		$this->assertTrue( $result );
+	}
 }