diff --git a/README.md b/README.md
index bfaed64..2239c10 100644
--- a/README.md
+++ b/README.md
@@ -169,6 +169,8 @@ Example config:
         'timeout' => 3,
         // the token must match 'upload.token' config in XHGui
         'token' => 'token',
+        // whether to gzip compress the payload
+        'compress' => true,
     ),
 ```
 
diff --git a/src/Saver/UploadSaver.php b/src/Saver/UploadSaver.php
index 38fbbda..f05743d 100644
--- a/src/Saver/UploadSaver.php
+++ b/src/Saver/UploadSaver.php
@@ -10,8 +10,10 @@ class UploadSaver implements SaverInterface
     private $url;
     /** @var int */
     private $timeout;
+    /** @var bool */
+    private $compress;
 
-    public function __construct($url, $token, $timeout)
+    public function __construct($url, $token, $timeout, $compress)
     {
         $this->url = $url;
         if ($token) {
@@ -19,6 +21,7 @@ public function __construct($url, $token, $timeout)
         }
 
         $this->timeout = $timeout;
+        $this->compress = $compress;
     }
 
     public function isSupported()
@@ -29,7 +32,7 @@ public function isSupported()
     public function save(array $data)
     {
         $json = json_encode($data);
-        $this->submit($this->url, $json);
+        $this->submit($this->url, $json, $this->hasCompression());
 
         return true;
     }
@@ -37,8 +40,9 @@ public function save(array $data)
     /**
      * @param string $url
      * @param string $payload
+     * @param bool $compress
      */
-    private function submit($url, $payload)
+    private function submit($url, $payload, $compress)
     {
         $ch = curl_init($url);
         if (!$ch) {
@@ -49,13 +53,13 @@ private function submit($url, $payload)
             // Prefer to receive JSON back
             'Accept: application/json',
             // The sent data is JSON
-            'Content-Type: application/json',
+            $compress ? 'Content-Type: application/json+gzip' : 'Content-Type: application/json',
         );
 
         $res = curl_setopt_array($ch, array(
             CURLOPT_CUSTOMREQUEST => 'POST',
             CURLOPT_RETURNTRANSFER => true,
-            CURLOPT_POSTFIELDS => $payload,
+            CURLOPT_POSTFIELDS => $compress ? gzencode($payload) : $payload,
             CURLOPT_FOLLOWLOCATION => 1,
             CURLOPT_HTTPHEADER => $headers,
             CURLOPT_TIMEOUT => $this->timeout,
@@ -80,4 +84,12 @@ private function submit($url, $payload)
             throw new ProfilerException($message);
         }
     }
+
+    /**
+     * @return bool
+     */
+    private function hasCompression()
+    {
+        return $this->compress && function_exists('gzencode');
+    }
 }
diff --git a/src/SaverFactory.php b/src/SaverFactory.php
index 9a0dd6f..5d22b11 100644
--- a/src/SaverFactory.php
+++ b/src/SaverFactory.php
@@ -32,10 +32,11 @@ public static function create($saveHandler, array $config = array())
                     'url' => null,
                     'token' => null,
                     'timeout' => 3,
+                    'compress' => false,
                 );
                 $userConfig = isset($config['save.handler.upload']) && is_array($config['save.handler.upload']) ? $config['save.handler.upload'] : array();
                 $saverConfig = array_merge($defaultConfig, $userConfig);
-                $saver = new Saver\UploadSaver($saverConfig['url'] ?: $saverConfig['uri'], $saverConfig['token'], $saverConfig['timeout']);
+                $saver = new Saver\UploadSaver($saverConfig['url'] ?: $saverConfig['uri'], $saverConfig['token'], $saverConfig['timeout'], $saverConfig['compress']);
                 break;
 
             case Profiler::SAVER_STACK: