diff --git a/CHANGELOG.md b/CHANGELOG.md
index 66e3134b66..f6ca64fe2f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -16,13 +16,14 @@ All notable changes to this project will be documented in this file based on the
  - Add support for Health parameters for Cluster\Health endpoint (new prop : delayed_unassigned_shards, number_of_pending_tasks, number_of_in_flight_fetch, task_max_waiting_in_queue_millis, active_shards_percent_as_number)
  - Add support for querystring in Type. this allow to use `update_all_types` in type mapping in order to resolve conflicts between fields in different types. [Conflicts between fields in different types](https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-put-mapping.html#merging-conflicts) 
  - Added `\Elastica\Query\ParentId` to avoid join with parent documents [#1287](https://github.com/ruflin/Elastica/issues/1287)
+ - Added `\Elastica\Reindex` for reindexing between indices [#1311](https://github.com/ruflin/Elastica/issues/1311)
 
 ### Improvements
 
  - Added support for `other_bucket` and `other_bucket_key` paramters on `Elastica\Aggregation\Filters`
 
 ### Deprecated
-
+ - Deprecated `Tool\CrossIndex` use `\Elastica\Reindex` instead [#1311](https://github.com/ruflin/Elastica/issues/1311)
 
 ## [Unreleased](https://github.com/ruflin/Elastica/compare/5.1.0...5.2.0)
 
diff --git a/lib/Elastica/Reindex.php b/lib/Elastica/Reindex.php
new file mode 100644
index 0000000000..32cde25c82
--- /dev/null
+++ b/lib/Elastica/Reindex.php
@@ -0,0 +1,139 @@
+<?php
+namespace Elastica;
+
+use Elastica\Query\AbstractQuery;
+
+class Reindex
+{
+    const VERSION_TYPE = 'version_type';
+    const VERSION_TYPE_INTERNAL = 'internal';
+    const VERSION_TYPE_EXTERNAL = 'external';
+    const OPERATION_TYPE = 'op_type';
+    const OPERATION_TYPE_CREATE = 'create';
+    const CONFLICTS = 'conflicts';
+    const CONFLICTS_PROCEED = 'proceed';
+    const TYPE = 'type';
+    const SIZE = 'size';
+    const QUERY = 'query';
+
+    /**
+     * @var Index
+     */
+    protected $_oldIndex;
+
+    /**
+     * @var Index
+     */
+    protected $_newIndex;
+
+    /**
+     * @var array
+     */
+    private $_options;
+
+    public function __construct(Index $oldIndex, Index $newIndex, array $options = [])
+    {
+        $this->_oldIndex = $oldIndex;
+        $this->_newIndex = $newIndex;
+        $this->_options = $options;
+    }
+
+    public function run()
+    {
+        $body = $this->getBody($this->_oldIndex, $this->_newIndex, $this->_options);
+
+        $reindexEndpoint = new \Elasticsearch\Endpoints\Reindex();
+        $reindexEndpoint->setBody($body);
+
+        $this->_oldIndex->getClient()->requestEndpoint($reindexEndpoint);
+        $this->_newIndex->refresh();
+
+        return $this->_newIndex;
+    }
+
+    protected function getBody($oldIndex, $newIndex, $options)
+    {
+        $body = array_merge([
+            'source' => $this->getSourcePartBody($oldIndex, $options),
+            'dest' => $this->getDestPartBody($newIndex, $options)
+        ], self::resolveBodyOptions($options));
+
+        return $body;
+    }
+
+    private function getSourcePartBody(Index $index, array $options)
+    {
+        $sourceBody = array_merge([
+            'index' => $index->getName(),
+        ], $this->resolveSourceOptions($options));
+
+        $sourceBody = $this->setSourceQuery($sourceBody);
+        $sourceBody = $this->setSourceType($sourceBody);
+
+        return $sourceBody;
+    }
+
+    private function getDestPartBody(Index $index, array $options)
+    {
+        return array_merge([
+            'index' => $index->getName(),
+        ], $this->resolveDestOptions($options));
+    }
+
+    private static function resolveSourceOptions(array $options)
+    {
+        return array_intersect_key($options, [
+            self::TYPE => null,
+            self::QUERY => null,
+        ]);
+    }
+
+    private function resolveDestOptions(array $options)
+    {
+        return array_intersect_key($options, [
+            self::VERSION_TYPE => null,
+            self::OPERATION_TYPE => null,
+        ]);
+    }
+
+    private function resolveBodyOptions(array $options)
+    {
+        return array_intersect_key($options, [
+            self::SIZE => null,
+            self::CONFLICTS => null,
+        ]);
+    }
+
+    /**
+     * @param array $sourceBody
+     *
+     * @return array
+     */
+    private function setSourceQuery(array $sourceBody)
+    {
+        if (isset($sourceBody[self::QUERY]) && $sourceBody[self::QUERY] instanceof AbstractQuery) {
+            $sourceBody[self::QUERY] = $sourceBody[self::QUERY]->toArray();
+        }
+        return $sourceBody;
+    }
+
+    /**
+     * @param array $sourceBody
+     *
+     * @return array
+     */
+    private function setSourceType(array $sourceBody)
+    {
+        if (isset($sourceBody[self::TYPE]) && !is_array($sourceBody[self::TYPE])) {
+            $sourceBody[self::TYPE] = [$sourceBody[self::TYPE]];
+        }
+        if (isset($sourceBody[self::TYPE])) {
+            foreach ($sourceBody[self::TYPE] as $key => $type) {
+                if ($type instanceof Type) {
+                    $sourceBody[self::TYPE][$key] = $type->getName();
+                }
+           }
+        }
+        return $sourceBody;
+    }
+}
diff --git a/lib/Elastica/Tool/CrossIndex.php b/lib/Elastica/Tool/CrossIndex.php
index ca2662e3a2..7259d04516 100644
--- a/lib/Elastica/Tool/CrossIndex.php
+++ b/lib/Elastica/Tool/CrossIndex.php
@@ -12,6 +12,8 @@
  * Functions to move documents and types between indices.
  *
  * @author Manuel Andreo Garcia <andreo.garcia@gmail.com>
+ *
+ * @deprecated use Reindex instead. This class will be removed in further Elastica releases.
  */
 class CrossIndex
 {
diff --git a/test/Elastica/ReindexTest.php b/test/Elastica/ReindexTest.php
new file mode 100644
index 0000000000..2536f540d5
--- /dev/null
+++ b/test/Elastica/ReindexTest.php
@@ -0,0 +1,181 @@
+<?php
+namespace Elastica\Test;
+
+use Elastica\Document;
+use Elastica\Index;
+use Elastica\Query\Match;
+use Elastica\Reindex;
+use Elastica\Type;
+
+class ReindexTest extends Base
+{
+    /**
+     * Test default reindex.
+     *
+     * @group functional
+     */
+    public function testReindex()
+    {
+        $oldIndex = $this->_createIndex('idx1', true, 2);
+        $this->_addDocs($oldIndex->getType('resetTest'), 10);
+
+        $newIndex = $this->_createIndex('idx2', true, 2);
+
+        $reindex = new Reindex($oldIndex, $newIndex);
+        $this->assertInstanceOf(
+            Index::class,
+            $newIndex
+        );
+        $newIndex = $reindex->run();
+
+        $this->assertEquals(10, $newIndex->count());
+
+        $oldResult = [];
+
+        foreach ($oldIndex->search()->getResults() as $result) {
+            $oldResult[] = $result->getData();
+        }
+
+        $newResult = [];
+
+        foreach ($newIndex->search()->getResults() as $result) {
+            $newResult[] = $result->getData();
+        }
+
+        $this->assertEquals($oldResult, $newResult);
+    }
+
+    /**
+     * Test reindex type option.
+     *
+     * @group functional
+     */
+    public function testReindexTypeOption()
+    {
+        $oldIndex = $this->_createIndex('', true, 2);
+        $type1 = $oldIndex->getType('crossIndexTest_1');
+        $type2 = $oldIndex->getType('crossIndexTest_2');
+
+        $docs1 = $this->_addDocs($type1, 10);
+        $docs2 = $this->_addDocs($type2, 10);
+
+        $newIndex = $this->_createIndex(null, true, 2);
+
+        $reindex = new Reindex($oldIndex, $newIndex, [
+            Reindex::TYPE => 'crossIndexTest_1',
+        ]);
+        $reindex->run();
+
+        $this->assertEquals(10, $newIndex->count());
+        $newIndex->deleteDocuments($docs1);
+
+        // string
+        $reindex = new Reindex($oldIndex, $newIndex, [
+            Reindex::TYPE => 'crossIndexTest_2',
+        ]);
+        $reindex->run();
+        $this->assertEquals(10, $newIndex->count());
+        $newIndex->deleteDocuments($docs2);
+
+        // array
+        $reindex = new Reindex($oldIndex, $newIndex, [
+            Reindex::TYPE => [
+                $type1,
+                'crossIndexTest_2',
+            ],
+        ]);
+        $reindex->run();
+        $this->assertEquals(20, $newIndex->count());
+    }
+
+    /**
+     * @group functional
+     */
+    public function testReindexOpTypeOptionWithProceedSetOnConflicts()
+    {
+        $oldIndex = $this->_createIndex('idx1', true, 2);
+        $type1 = $oldIndex->getType('crossIndexTest_1');
+
+        $docs1 = $this->_addDocs($type1, 10);
+
+        $subDocs1 = array_splice($docs1, 0, 5);
+
+        $newIndex = $this->_createIndex('idx2', true, 2);
+        $newIndex->addDocuments($subDocs1);
+        $newIndex->refresh();
+
+        $this->assertEquals(5, $newIndex->count());
+
+        $reindex = new Reindex($oldIndex, $newIndex, [
+            Reindex::OPERATION_TYPE => Reindex::OPERATION_TYPE_CREATE,
+            Reindex::CONFLICTS => Reindex::CONFLICTS_PROCEED,
+        ]);
+
+        $reindex->run();
+
+        $this->assertEquals(10, $newIndex->count());
+    }
+
+    /**
+     * @group functional
+     */
+    public function testReindexWithQueryOption()
+    {
+        $oldIndex = $this->_createIndex('idx1', true, 2);
+        $type1 = $oldIndex->getType('crossIndexTest_1');
+        $docs1 = $this->_addDocs($type1, 10);
+
+        $newIndex = $this->_createIndex('idx2', true, 2);
+
+        $query = new Match('id', 8);
+
+        $reindex = new Reindex($oldIndex, $newIndex, [
+            Reindex::QUERY => $query,
+        ]);
+        $reindex->run();
+
+        $results = $newIndex->search()->getResults();
+        $this->assertEquals(1, $newIndex->count());
+        foreach ($results as $result) {
+            $this->assertEquals($docs1[7]->getData(), $result->getData());
+        }
+    }
+
+    /**
+     * @group functional
+     */
+    public function testReindexWithSizeOption()
+    {
+        $oldIndex = $this->_createIndex('idx1', true, 2);
+        $type1 = $oldIndex->getType('crossIndexTest_1');
+        $this->_addDocs($type1, 10);
+
+        $newIndex = $this->_createIndex('idx2', true, 2);
+
+        $reindex = new Reindex($oldIndex, $newIndex, [
+            Reindex::SIZE => 5,
+        ]);
+        $reindex->run();
+
+        $this->assertEquals(5, $newIndex->count());
+    }
+
+    /**
+     * @param Type $type
+     * @param int  $docs
+     *
+     * @return array
+     */
+    private function _addDocs(Type $type, $docs)
+    {
+        $insert = [];
+        for ($i = 1; $i <= $docs; ++$i) {
+            $insert[] = new Document($i, ['id' => $i, 'key' => 'value']);
+        }
+
+        $type->addDocuments($insert);
+        $type->getIndex()->refresh();
+
+        return $insert;
+    }
+}